HALLER, J.
*664K.C. (Mother) appeals orders of the juvenile court terminating parental rights to her sons A.C. and E.C. under Welfare and Institutions Code section 366.26 and placing them for adoption. She contends the court erred by concluding it had subject matter jurisdiction over her children's cases under the Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA, Fam. Code, § 3400 et seq. ).1 The parties agree that Mexico is her children's home state. Although the court sent two e-mails to Mexico courts inquiring whether they declined to exercise jurisdiction over the children's cases in favor of California's assumption of jurisdiction, Mother argues on appeal that the court erred by not verifying and authenticating on the record that those e-mails were sent to the correct e-mail addresses and appropriate judicial authorities in Mexico and that those e-mails were actually received by those authorities. Mother argues that without such verification and authentication, the record does not show that the Mexico courts affirmatively declined to exercise home state jurisdiction of the cases under the UCCJEA based solely on their failure to timely respond to the juvenile court's e-mails. She further argues that, in any event, the court could not exercise subject matter jurisdiction under section 3421, subdivision (a)(2), because there is no evidence showing that the children and at least one parent had significant connections to California other than mere physical presence or that there is substantial evidence available in California concerning the children's care, protection, training, and personal relationships. We affirm the orders.
FACTUAL AND PROCEDURAL BACKGROUND
On May 21, 2015, Mother, who was born in California, was deported from Mexico to the United States at the San Ysidro Port of Entry. Her two sons, A.C. and E.C., were with her when San Diego Police Department officers responded to a call regarding a female (Mother) who might be unfit to care for her two children. On their *730arrival, the officers found A.C., then six years old, and E.C., then 15 months old, sitting on the ground with Mother. Mother appeared manic and confused about her detention and expressed irrational beliefs (e.g., she could communicate telepathically). Based on their belief Mother was gravely disabled and unable to care for herself and her two children, the officers detained Mother pursuant to Welfare and Institutions Code section 5150 and transported her to a San Diego County mental health facility for evaluation. Her children were transported to the Polinsky Children's Center (PCC).
On May 26, the San Diego County Health and Human Services Agency (Agency) filed a Welfare and Institutions Code section 300, subdivision (b), *665juvenile dependency petition for each child, alleging the child was at substantial risk of serious physical harm or illness because of Mother's inability to care for the child. Agency's detention report summarized Mother's extensive criminal history, including an April 16, 2015, arrest in San Luis Obispo, California, for bribing an officer, carrying a concealed firearm in a vehicle, and being a felon or addict in possession of a firearm. Mother did not provide Agency with the identity of her children's father(s).
On May 27, the juvenile court issued orders finding prima facie showings had been made under Welfare and Institutions Code section 300, subdivision (b), detaining the children at PCC or an approved foster home, and setting jurisdiction and disposition hearings for June 16. Although Mother had been released from the mental health facility the previous day and had received notice of the detention hearings, she did not appear at the hearings.
In Agency's report for the jurisdiction and disposition hearings, it reported that Mother stated she and her children lived in Mexico and her children had Mexico citizenship. Mother identified M.C. as the children's father, but stated he was not involved in their lives. A maternal aunt confirmed Mother initially lived in Monterey, California, but relocated to Mexico with M.C. after he was deported there. Mother denied having mental health problems. Although Mother visited her children at PCC on June 5, she did not show up for a scheduled visit three days later or for a scheduled appointment with an Agency social worker. Agency recommended that the court declare the children dependents of the court and order reunification services and supervised visits for Mother.
On June 16, the court held the jurisdiction and disposition hearings. Mother did not appear at the hearings. Agency raised the issue of the court's jurisdiction under the UCCJEA based on Mother's report that she had lived in Mexico for the past nine years and her children had resided in Mexico with her. Agency recommended that the court take temporary emergency jurisdiction under the UCCJEA and then contact Mexico courts to determine whether they were interested in exercising jurisdiction over the case before deciding the question of its subject matter jurisdiction. The court continued the hearings until July 15 and stated it would send an e-mail to Mexico authorities to determine whether they were willing to defer subject matter jurisdiction to it. Agency confirmed the court's understanding that Mother was currently living in Rosarito, Mexico.
Agency thereafter learned that a Mexico birth record showed A.C. was born in Mexico, but no birth record for E.C. was located. Mother stated E.C. was born in Tijuana, Mexico, but his birth apparently was not registered in either Mexico or the United States.
*666At the July 15 continued hearings, the court stated on the record its attempts to contact Mexico court authorities to ascertain *731whether Mexico declined to exercise jurisdiction over the cases in favor of California assuming jurisdiction, stating:
"With respect to UCCJEA, I have handed the lawyers, and I have filed in the court file, my two written attempts to contact the judges that this court is on notice are the presiding judges over dependency and family court matters within Baja California, including the Rosarito County ... or City within Baja California. I made two contacts. I have made several telephone calls to the numbers that I had with no success in getting through to these two judges, as well as two written e-mail inquiries-one Thursday, July 2nd, the other Monday, July 6th.
"I did indicate that if I did not hear back from either judge regarding opposition to this court taking subject matter jurisdiction prior to July 14th, 2015, then I would assume that the Country of Mexico is deferring jurisdiction to San Diego County.
"I have not heard from either judge. We are past the deadline that I asked for a response."2
The court then found it had complied with the UCCJEA by giving notice to Mexico of the proceedings in these cases and of Mexico's ability to go forward with its own proceedings in its jurisdiction. The court further found that because it had not received any response to its inquiries, it took subject *667matter jurisdiction over the cases in lieu of the Mexico courts taking jurisdiction and continued the hearings to a future date. Neither Mother nor M.C. appeared at the hearings.
Agency subsequently learned, and reported to the court, that Mother had been arrested on July 23 at the United States/Mexico border and transported to the San Luis Obispo County jail on a felony warrant arising out of the April 2015 charges against her. While in custody, Mother told an Agency social worker that she misses her children and would like them returned to her. Mother was released from custody on September 17. The children were placed together in a confidential foster home and were doing well. Agency also learned that the children's maternal grandmother lived in Carmel, *732California. Their paternal grandfather also lived in the United States. He told Agency that he had often provided daily care for A.C. and assisted with taking him to medical appointments.
At the September 22 continued hearings, Mother appeared, was advised of the dependency petitions, and denied their allegations. She was advised of the six-month reunification periods and reunification services available to her. The court set contested jurisdiction and disposition trials for October 29.
At the October 29 trials, Mother did not appear. The court found it had jurisdiction, declared the children dependents of the court, removed them from parental care, placed them in foster care, ordered reunification services for Mother, and set six-month review hearings.
Mother had no contact with Agency from September 22, 2015, through April 6, 2016. Mother was in custody in the San Luis Obispo County jail from April 1, 2016, through April 26, 2016. On April 15, an Agency social worker spoke with Mother who stated she stayed at her Tijuana home from October 2015 through early January 2016, visited her mother in Monterey, California, for three weeks in January, and then returned to her Tijuana home until she was held in a Tijuana jail in March and transferred to the San Luis Obispo County jail. On May 12, Mother visited A.C. and E.C. at Agency's office.3 Mother was informed of the next court hearings.
At the May 23 contested six-month review hearings, the court terminated Mother's reunification services and set Welfare and Institutions Code section 366.26 hearings to select permanent plans for the children.
*668On February 14, 2017, after several continuations, the Welfare and Institutions Code section 366.26 hearings were held.4 Neither Mother nor M.C. appeared at the hearings. Agency's report stated the children were adoptable and their current caregiver was willing to adopt them. Agency recommended that the court terminate the parental rights of Mother and M.C. and select adoption as the children's permanent plans. The court found the children were likely to be adopted and none of the exceptions to adoption applied, selected adoption as their permanent plans, and terminated the parental rights of Mother and M.C.
Mother timely filed a notice of appeal challenging the court's February 14, 2017 orders.
DISCUSSION
I
The UCCJEA Generally
The UCCJEA is the exclusive method for determining subject matter jurisdiction for child custody proceedings in California. (§§ 3421, subd. (b), 3402, subd. (d); In re M.M. (2015) 240 Cal.App.4th 703, 715, 192 Cal.Rptr.3d 849 ; In re Gino C. (2014) 224 Cal.App.4th 959, 965, 169 Cal.Rptr.3d 193.) A dependency action is a child custody proceeding under the UCCJEA. (§ 3402, subd. (d); In re M.M. , at p. 715, 192 Cal.Rptr.3d 849.) Subject matter jurisdiction over a dependency action or other child custody proceeding either exists or does not exist at the time the petition is filed, and jurisdiction under the *733UCCJEA may not be conferred by mere presence of the parties or by stipulation, consent, waiver, or estoppel. ( In re A.M. (2014) 224 Cal.App.4th 593, 597-598, 168 Cal.Rptr.3d 494 ; Brewer v. Carter (2013) 218 Cal.App.4th 1312, 1316-1317, 160 Cal.Rptr.3d 853.)
Section 3421 sets forth four alternative bases for subject matter jurisdiction in child custody proceedings, providing:
"(a) Except as otherwise provided in Section 3424, a court of this state has jurisdiction to make an initial child custody determination only if any of the following are true:
"(1) This state is the home state of the child on the date of the commencement of the proceeding, or was the home state of the child within six months *669before the commencement of the proceeding and the child is absent from this state but a parent or person acting as a parent continues to live in this state.
"(2) A court of another state does not have jurisdiction under paragraph (1), or a court of the home state of the child has declined to exercise jurisdiction on the grounds that this state is the more appropriate forum under Section 3427 or 3428, and both of the following are true: [¶] (A) The child and the child's parents, or the child and at least one parent or a person acting as a parent, have a significant connection with this state other than mere physical presence. [¶] (B) Substantial evidence is available in this state concerning the child's care, protection, training, and personal relationships.
"(3) All courts having jurisdiction under paragraph (1) or (2) have declined to exercise jurisdiction on the ground that a court of this state is the more appropriate forum to determine the custody of the child under Section 3427 or 3428.
"(4) No court of any other state would have jurisdiction under the criteria specified in paragraph (1), (2), or (3)."
A child's home state has priority over other jurisdictional bases. (§ 3421, subd. (a)(1); Brewer v. Carter, supra , 218 Cal.App.4th at p. 1317, 160 Cal.Rptr.3d 853.)
On appeal, "when the facts are contested, a trial court's jurisdictional finding under the UCCJEA is reviewed under the deferential substantial evidence standard. [Citations.] When conducting a substantial evidence review, we must review the entire record in the light most favorable to the prevailing party, resolve all conflicts in the evidence in favor of the ruling or judgment being reviewed, and indulge all reasonable inferences in support of the family [or juvenile] court's findings. [Citation.] The family [or juvenile] court's resolution of conflicts in the evidence and credibility assessments are binding on this court. [Citation.]" ( Schneer v. Llaurado (2015) 242 Cal.App.4th 1276, 1286-1287, 195 Cal.Rptr.3d 858, fn. omitted ( Schneer ).)5
*670In contrast, we review de *734novo, or independently, a juvenile court's determination of jurisdictional facts based on undisputed evidence and its interpretation of statutes. ( Schneer , at pp. 1286, 1287, fn. 5, 195 Cal.Rptr.3d 858.)
II
Subject Matter Jurisdiction Over A.C. 's and E.C.'s Cases
Mother contends the juvenile court erred by concluding it had subject matter jurisdiction under the UCCJEA over A.C.'s and E.C.'s juvenile dependency cases. In particular, she argues the court erred by not verifying and authenticating on the record that its e-mails to Mexico authorities were, in fact, sent to the correct e-mail addresses and appropriate judicial authorities in Mexico and that those e-mails were actually received by those authorities. Mother argues that without such verification and authentication, the record does not show that the Mexico courts affirmatively declined to exercise home state jurisdiction over the cases under the UCCJEA based solely on their failure to timely respond to the juvenile court's e-mails. Mother also contends the court could not exercise subject matter jurisdiction under section 3421, subdivision (a)(2), because there is no evidence showing that the children and at least one parent had significant connections to California other than mere physical presence and that there is substantial evidence available in California concerning the children's care, protection, training, and personal relationships.
A
At the June 16, 2015 hearings, Agency raised the issue of the court's jurisdiction under the UCCJEA based on Mother's report that she and the children had lived in Mexico for the past nine years. Presumably recognizing Mexico was the children's home state under the UCCJEA, Agency recommended that the court take temporary emergency jurisdiction under the UCCJEA and then contact Mexico courts to determine whether they were interested in exercising jurisdiction over the case before deciding the question of its subject matter jurisdiction. The court stated it would send an e-mail to Mexico authorities to determine whether or not they were willing to defer subject matter jurisdiction to it.
At the July 15, 2015 hearings, the juvenile court, as discussed above, described on the record its attempts to contact Mexico court authorities. It stated it had sent e-mails on July 2, 2015, and on July 6, 2015, to two Mexico family court judges and had also made several telephone calls in unsuccessful attempts to speak with them. The court gave counsel for Agency and Mother copies of the contact information it used. The relevant text of those e-mails is *671quoted in footnote 2 above. In particular, the court's e-mails asked the Mexico court authorities whether they "decline to exercise jurisdiction over this case in favor of California assuming jurisdiction[.]" Having not received a response by its stated July 14, 2015 deadline, the court found it had complied with the UCCJEA by giving notice to Mexico of the proceedings in these cases and of Mexico's ability to go forward with its own proceedings in its jurisdiction and then took subject matter jurisdiction over the cases in lieu of the Mexico courts taking jurisdiction.
B
The parties agree, and the record show, that Mexico was the children's home state *735within the meaning of the UCCJEA. The parties also agree, and we concur, that the juvenile court properly assumed temporary emergency jurisdiction over the children's cases under section 3424. However, the parties disagree on whether the court erred by finding Mexico, as their home state, declined to exercise its subject matter jurisdiction on the ground that California was the more appropriate forum under section 3421, subdivision (a)(2) or (a)(3), quoted above. Mother argues the court's failure to receive a timely response from Mexico judicial authorities does not support the inference that Mexico declined to exercise its jurisdiction on the ground that California is the more appropriate forum. (§ 3421, subds. (a)(2), (a)(3).)
In particular, Mother argues the court erred because the record does not show it verified and authenticated that its e-mails to Mexico authorities were, in fact, sent to the correct e-mail addresses and appropriate judicial authorities in Mexico and that those e-mails were actually received by those authorities.6 However, she did not raise those issues or objections below and therefore forfeited or waived for purposes of appeal any arguments that the court erred in its procedures. ( Doers v. Golden Gate Bridge etc. Dist. (1979) 23 Cal.3d 180, 184, fn. 1, 151 Cal.Rptr. 837, 588 P.2d 1261 [" 'An appellate court will ordinarily not consider procedural defects ... where an objection could have been but was not presented to the lower court by some appropriate method .... [I]t is unfair to the trial judge and to the adverse party to take advantage of an error on appeal when it could easily have been corrected at the trial.' [Citation.]"].) In this case, it would be unfair to both *672the juvenile court and Agency for Mother to receive all of the court's contact information and correspondence with Mexico judicial authorities at the July 15, 2015 hearing and then not raise any objections or concerns that the e-mail addresses or judicial authorities were incorrect or that there was no affirmative showing they received the e-mails at the time of that hearing or at any of the many hearings thereafter through the court's February 14, 2017 order that was issued 19 months later. ( Ibid . ) If Mother had believed any of the court's contact information was incorrect, she could, and should, have independently ascertained the correct information and then informed the court of that information or, at least, raised the issue of possible incorrect contact information during the July 15, 2015 hearings or thereafter. By not doing so, she has forfeited or waived any such procedural errors by the court. To the extent Mother argues there can be no forfeiture or waiver of those purported errors because they were substantive, and not procedural, errors, we disagree. Mother does not cite any case or other authority showing that a juvenile court's subject matter jurisdiction under section 3421, subdivision (a)(2) or (a)(3), is dependent on an affirmative showing on the record that the court verified and authenticated that its contact information for Mexico or other foreign state judicial authorities was correct and that those authorities did, in fact, receive its correspondence and, yet, did not respond. *736Accordingly, we conclude the purported errors were of a procedural, and not substantive, nature and were therefore subject to forfeiture or waiver for failure to timely raise any objections below. ( Doers , at p. 184, fn. 1, 151 Cal.Rptr. 837, 588 P.2d 1261.)
Furthermore, because Mother has not cited any case or other authority showing the court had a duty under the UCCJEA or otherwise to state on the record that it had verified and authenticated that its e-mails were sent to the correct e-mail addresses and to the appropriate judicial authorities in Mexico or that those e-mails were actually received by those authorities, she waived that argument or, at least, has not carried her burden on appeal to show the court erred by not doing so. "Appellate briefs must provide argument and legal authority for the positions taken." ( Nelson v. Avondale HOA (2009) 172 Cal.App.4th 857, 862, 91 Cal.Rptr.3d 726.) "When an appellant fails to raise a point, or asserts it but fails to support it with reasoned argument and citations to authority, we treat the point as waived." ( Badie v. Bank of America (1998) 67 Cal.App.4th 779, 784-785, 79 Cal.Rptr.2d 273.) If an argument in an appellate brief is supported by only an opinion or argument of appellant's counsel without "citation to any recognized legal authority," that argument may be deemed waived for failure to present supporting substantive legal analysis. ( Kim v. Sumitomo Bank (1993) 17 Cal.App.4th 974, 979, 21 Cal.Rptr.2d 834 ; see also People v. Stanley (1995) 10 Cal.4th 764, 793, 42 Cal.Rptr.2d 543, 897 P.2d 481 ; Niko v. Foreman (2006) 144 Cal.App.4th 344, 368, 50 Cal.Rptr.3d 398 ; MST Farms v. C. G. 1464 (1988) 204 Cal.App.3d 304, 306, 251 Cal.Rptr. 72.) By *673not citing any legal authority showing the court had the duties Mother asserts, she has forfeited or waived those arguments.
In any event, we nevertheless conclude the court properly verified and authenticated its contact information for the Mexico judicial authorities. All intendments and presumptions are made to support a trial court's judgments, orders, rulings, and other actions where the record is silent, and it is the appellant's burden on appeal to show those actions are erroneous. ( Denham v. Superior Court (1970) 2 Cal.3d 557, 564, 86 Cal.Rptr. 65, 468 P.2d 193 ; Cahill v. San Diego Gas & Elec. Co. (2011) 194 Cal.App.4th 939, 956, 124 Cal.Rptr.3d 78 ; Winograd v. American Broadcasting Co. (1998) 68 Cal.App.4th 624, 631-632, 80 Cal.Rptr.2d 378.) Accordingly, although the record in this case may not affirmatively show the court verified and authenticated that the e-mail addresses and Mexico judicial authorities were correct, we must presume the court properly acted because the record is silent on those issues. ( Denham , at p. 564, 86 Cal.Rptr. 65, 468 P.2d 193 ; Cahill , at p. 954, 124 Cal.Rptr.3d 78 ; Winograd , at pp. 631-632, 80 Cal.Rptr.2d 378.) Likewise, we presume the court properly inferred those authorities did, in fact, receive its e-mails because the record does not show otherwise. As discussed above, the court stated on the record that it had sent two e-mails to Mexico family court authorities and made several telephone calls in attempts to speak with them and provided counsel with copies of the e-mails and its contact information. The court also stated on the record that it had not received any response from those authorities by the time of the deadline (i.e., July 14, 2015) set forth in its e-mails. Because Mother has not cited, and we are unaware of, anything in the record affirmatively showing the court did not verify or authenticate its contact information for the Mexico judicial authorities or that those authorities did not receive its e-mails, we conclude Mother has not carried *737her burden on appeal to show the court erred by not verifying and authenticating on the record that contact information and their receipt of its e-mails.
Furthermore, even if Mother had shown the court erred by not stating that information on the record, that procedural error is subject to harmless error analysis. ( In re R.L. (2016) 4 Cal.App.5th 125, 143, 208 Cal.Rptr.3d 523 [UCCJEA procedural error requires showing of prejudice under People v. Watson (1956) 46 Cal.2d 818, 299 P.2d 243 standard to warrant reversal]; In re Cristian I . (2014) 224 Cal.App.4th 1088, 1102-1103, 169 Cal.Rptr.3d 265 [same]; In re M.M., supra , 240 Cal.App.4th at pp. 717-718, 192 Cal.Rptr.3d 849 [same].) Mother has made no attempt to carry her burden on appeal to show it is reasonably probable she would have obtained a more favorable result had the court stated on the record its verification and authentication of the correctness of its contact information and the Mexico judicial authorities it contacted. In particular, Mother has not made any attempt on appeal to show the court used incorrect contact information for the appropriate Mexico judicial authorities. Therefore, we conclude that any such procedural error by the court does not *674require reversal of the instant orders. ( Watson , at p. 836, 299 P.2d 243 ; In re R.L ., at p. 143, 208 Cal.Rptr.3d 523 ; In re Cristian I. , at pp. 1102-1103, 169 Cal.Rptr.3d 265 ; In re M.M. , at pp. 717-718, 192 Cal.Rptr.3d 849.)
C
To the extent Mother contends the record does not support the court's finding that Mexico declined to exercise jurisdiction over the children's cases on the ground California was the more appropriate forum, we conclude there is substantial evidence to support the court's finding it may have jurisdiction under section 3421, subdivision (a)(2) or (a)(3), because the Mexico judicial authorities' failure to timely respond to its e-mails was tantamount to their declination to exercise jurisdiction over the children's cases. Our recent opinion in In re M.M., supra , 240 Cal.App.4th 703, 192 Cal.Rptr.3d 849, is instructive. In that case, Agency filed a dependency petition in the San Diego County Superior Court regarding a child who had lived for less than six months in California, but had previously lived in Japan, which presumably was the child's home state under the UCCJEA. ( Id . at pp. 706, 711, 192 Cal.Rptr.3d 849.) The juvenile court attempted to contact a family court in Japan to discuss whether it would exercise subject matter jurisdiction over the case. ( Id . at pp. 710, 714-715, 192 Cal.Rptr.3d 849.) However, Japan court representatives informed the juvenile court that it would be inappropriate for one of its judges to discuss by telephone or e-mail the matter of jurisdiction in a specific case. ( Id . at p. 710, 192 Cal.Rptr.3d 849.) The juvenile court also did not receive a timely response from the Japan court to its detailed certified letter sent by express mail. ( Id . at p. 711, 192 Cal.Rptr.3d 849.) Accordingly, the court stated it had exhausted its efforts to discuss the jurisdiction issue with a Japan court, concluded the Japan court was not interested in discussing that issue, and found it had jurisdiction under the UCCJEA.7 ( Id . at pp. 709, 712, 192 Cal.Rptr.3d 849.)
*738On appeal, we noted that section 3421, subdivision (a)(2), was ambiguous regarding how a court of a home state or other potential forum state may decline jurisdiction. ( In re M.M., supra , 240 Cal.App.4th at p. 716, 192 Cal.Rptr.3d 849.) Rejecting a requirement that the home state decline jurisdiction by an express order finding that California is a more appropriate forum, we concluded "the home state can be deemed to have declined jurisdiction when it refuses for whatever reason to commit one way or the other to protect a child in a child custody proceeding or when, as in the instant case, it refuses to even discuss *675the issue of jurisdiction with another state...." ( Ibid . ) Alternatively stated, "when a home state declines jurisdiction in any manner that conveys its intent not to exercise jurisdiction over a child in connection with a child custody proceeding, including inaction or , as in the instant case, by refusing to even discuss the issue of jurisdiction despite myriad good faith attempts to do so by the juvenile court, that such inaction or refusal is tantamount to a declination of jurisdiction by the home state on the grounds California is the more appropriate forum under subdivision (a)(2) of section 3421." ( Id . at p. 717, 192 Cal.Rptr.3d 849.) Accordingly, based on the record in that case, we concluded the juvenile court correctly found that the child's home state of Japan had declined jurisdiction on the ground California was the more appropriate forum under section 3421, subdivision (a)(2), that the child and at least one parent had significant connections to California other than mere physical presence, and that substantial evidence was available in California concerning the child's care, protection, training, and personal relationships. (§ 3421, subd. (a)(2)(A), (B).) Therefore, we concluded the juvenile court had subject matter jurisdiction over the case under the UCCJEA. (Ibid .)
We conclude our reasoning and holding in In re M.M., supra , 240 Cal.App.4th 703, 192 Cal.Rptr.3d 849, supports the juvenile court's finding that it had subject matter jurisdiction under section 3421, subdivision (a)(2) or (a)(3), because the Mexico judicial authorities' failure to respond to its e-mails was tantamount to their declination to exercise jurisdiction over the children's cases. Similar to the juvenile court in In re M.M. , the court here attempted to discuss with a court of another state whether it would exercise jurisdiction over the dependency cases. Although in In re M.M. the Japan court representatives affirmatively indicated the court could not, or would not, discuss the issue of jurisdiction with the court and the juvenile court in these cases apparently was unable to speak substantively with Mexico court representatives, we do not believe that distinction requires a different result. Accordingly, we conclude the Mexico judicial authorities' inaction by failing to timely respond to the court's e-mails was tantamount to their declination to exercise jurisdiction over the children's cases on the ground California was the more appropriate forum. (§ 3421, subds. (a)(2), (a)(3); In re M.M. , at pp. 716-717, 192 Cal.Rptr.3d 849.) In re Gino C., supra , 224 Cal.App.4th 959, 169 Cal.Rptr.3d 193 and In re A.M., supra , 224 Cal.App.4th 593, 168 Cal.Rptr.3d 494, cited by Mother, are factually and procedurally inapposite to these cases and do not persuade us to reach a contrary conclusion.
D
Mother also asserts the court could not exercise subject matter jurisdiction under *739section 3421, subdivision (a)(2), because there is no evidence showing that the children and at least one parent had significant connections to *676California other than mere physical presence and that there is substantial evidence available in California concerning the children's care, protection, training, and personal relationships. However, Mother fails to acknowledge and dispute evidence in the record showing that Mother and the children had significant connections to California and that there is substantial evidence in California regarding the children's care, protection, training, and personal relationships. (§ 3421, subd. (a)(2).)
Significant connections to California .
The record shows, and Mother apparently does not dispute, that she had significant connections to California. She lived in California for most, if not all, of her life before A.C. was born and then moved to Mexico when M.C. was deported. The record shows she periodically returned to the United States even after she began residing in Mexico. In particular, Mother apparently was visiting her mother (i.e., the children's maternal grandmother) when the incident occurred that resulted in her April 2015 arrest in San Luis Obispo.
The record also shows A.C. had significant connections to California. His paternal grandfather, who apparently lived in or near Monterey, California, told Agency that he had often provided daily care for A.C. and assisted with taking him to medical appointments. Furthermore, although the record is silent, it can be reasonably inferred that A.C. was in California with Mother in April 2015 when she visited A.C.'s maternal grandmother because there is no evidence that M.C. or anyone else in Mexico provided care for him.
The record also supports an inference that E.C. had significant connections to California. Although the record does not show the paternal grandfather provided any daily care for E.C., it can be reasonably inferred that E.C. was in California with Mother in April 2015 when she visited E.C.'s maternal grandmother because there is no evidence that M.C. or anyone else in Mexico provided care for him. Furthermore, it could be reasonably argued that through his relationship to A.C. as his brother, E.C., who had lived with A.C. since his birth, indirectly has the same significant connections to California as A.C. does. A similar argument could be made based on E.C.'s relationship to Mother and her significant connections to California.
Therefore, the record supports the court's finding that Mother, A.C., and E.C. had significant connections to California at the time the children's dependency petitions were filed. (§ 3421, subd. (a)(2)(A).)
Substantial evidence regarding the children .
We further conclude there was substantial evidence in California regarding A.C.'s and E.C.'s care, protection, training, and personal relationships at *677the time their dependency petitions were filed. (§ 3421, subd. (a)(2)(B).) As discussed above, the paternal grandfather, who apparently lived in or near Monterey, California, told Agency that he had often provided daily care for A.C. and assisted with taking him to medical appointments. Therefore, the paternal grandfather presumably could provide evidence regarding A.C.'s care, protection, training, and personal relationships. Furthermore, Agency cared for A.C. from May 21, 2015, until May 26, 2015, when the children's dependency petitions were filed. Accordingly, Agency presumably also could provide evidence regarding his care, protection, training, *740and personal relationships. (§ 3421, subd. (a)(2)(B).)
Likewise, there is substantial evidence in California regarding E.C.'s care, protection, training, and personal relationships. Although the record is silent, it can be reasonably inferred that E.C. was in California with Mother in April 2015 when she visited E.C.'s maternal grandmother because there is no evidence that M.C. or anyone else in Mexico provided care for him. Therefore, E.C.'s maternal grandmother may have evidence regarding E.C.'s care, protection, training, and personal relationships. Furthermore, Agency cared for E.C. from May 21, 2015, until May 26, 2015, when the children's dependency petitions were filed. Accordingly, Agency presumably also could provide evidence regarding his care, protection, training, and personal relationships. (§ 3421, subd. (a)(2)(B).)
E
Based on the record in the children's cases, we conclude the juvenile court properly found it had subject matter jurisdiction over their cases under section 3421, subdivision (a)(2). Specifically, as discussed above, the record supports findings that Mexico declined to exercise jurisdiction over their cases on the ground California was a more appropriate forum, that Mother and the children had significant connections to California other than mere physical presence at the time of the filing of the dependency petitions, and there is substantial evidence regarding the children's care, protection, training, and personal relationships at the time of the filing of the petitions. (§ 3421, subd. (a)(2).)
In any event, assuming arguendo that the record does not support findings either that Mother and the children had significant connections to California (§ 3421, subd. (a)(2)(A)) or that there is substantial evidence in California regarding the children's care, protection, training, and personal relationships (§ 3421, subd. (a)(2)(B)), we nevertheless conclude the juvenile court necessarily had subject matter jurisdiction under section 3421, subdivision (a)(3). The only substantive difference between the language of section 3421, *678subdivision (a)(2), and section 3421, subdivision (a)(3), is the latter's omission of the significant connections and substantial evidence of care requirements stated in section 3421, subdivision (a)(2)(A) and (B).8 Based on the record, there is no other state that possibly could exercise jurisdiction over the children's dependency cases other than Mexico or California. Therefore, because, as we discussed above, Mexico declined to exercise jurisdiction over the children's cases on the ground California was the more appropriate forum, we conclude that the juvenile court had subject matter jurisdiction over their cases under section 3421, subdivision (a)(3), regardless of whether it also had jurisdiction under section 3421, subdivision (a)(2).
DISPOSITION
The orders are affirmed.
WE CONCUR:
McCONNELL, P.J.
O'ROURKE, J.