State v. Stacey Lynn Vaillancourt

2025 VT 20
CourtSupreme Court of Vermont
DecidedMay 2, 2025
Docket24-AP-094
StatusPublished

This text of 2025 VT 20 (State v. Stacey Lynn Vaillancourt) is published on Counsel Stack Legal Research, covering Supreme Court of Vermont primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
State v. Stacey Lynn Vaillancourt, 2025 VT 20 (Vt. 2025).

Opinion

NOTICE: This opinion is subject to motions for reargument under V.R.A.P. 40 as well as formal revision before publication in the Vermont Reports. Readers are requested to notify the Reporter of Decisions by email at: Reporter@vtcourts.gov or by mail at: Vermont Supreme Court, 109 State Street, Montpelier, Vermont 05609-0801, of any errors in order that corrections may be made before this opinion goes to press.

2025 VT 20

No. 24-AP-094

State of Vermont Supreme Court

On Appeal from v. Superior Court, Rutland Unit, Criminal Division

Stacey Lynn Vaillancourt March Term, 2025

Cortland Corsones, J.

Evan Meenan, Deputy State’s Attorney, Montpelier, for Plaintiff-Appellee.

Matthew Valerio, Defender General, and Dawn Matthews, Appellate Defender, Montpelier, for Defendant-Appellant.

PRESENT: Reiber, C.J., Eaton, Carroll, Cohen and Waples, JJ.

¶ 1. WAPLES, J. Defendant Stacey Vaillancourt appeals her convictions for

involuntary manslaughter and cruelty to a child with death resulting. She argues that the court

erred in denying her motion for judgment of acquittal because the State produced insufficient

evidence to support the jury’s verdicts; that the verdicts were inconsistent or, in the alternative,

that convictions for both crimes violate double jeopardy; and that the court erred in admitting

videos of the victim. We affirm.

¶ 2. The following evidence was introduced at trial. Defendant operated a daycare

facility in her home and had done so for twenty-six years prior to the events at issue here. Defendant’s son and his fiancée lived in their own unit within defendant’s home, and occasionally

helped her provide care.

¶ 3. Six-month-old H.B. was a happy baby. She could hold her head up, push herself

up with her arms, pick up small items like her bottle, and could “squirm move” but could not quite

crawl. She was not “a very good sleeper” and “didn’t like to sleep unless [someone was] holding

her.” In January 2019, she would take two or three naps during the day, ranging in duration from

ten to forty-five minutes. She would only nap in someone’s arms, because she would wake up if

placed into her crib or swing.

¶ 4. On January 22, 2019, H.B.’s parents dropped her off at defendant’s daycare for the

first time. H.B.’s mother brought supplies for defendant to use in caring for H.B., including

“diapers, wipes, brand new bottles, unopened formula, some baby food,” some clothing, and a

bottle of Tylenol that H.B.’s pediatrician prescribed for her teething discomfort. When mother

picked up H.B. at the end of the day, H.B. was “normal” if maybe “a little tired.” On January 23,

mother again dropped H.B. off at defendant’s daycare. When mother picked her up at the end of

the day, she “seemed a little fussy and tired, [and] more tired than normal.” H.B. napped for over

an hour after getting home, and did not sleep that night. H.B.’s parents took turns holding her

overnight because she would not sleep.

¶ 5. Mother dropped off H.B. again in the morning of January 24. That day, defendant’s

son and his fiancée were sick with food poisoning. Defendant was the only person who worked at

her daycare that day. Defendant’s son stopped by the daycare in the late morning to see if things

were going okay, saw that everything was quiet and fine, and then went back to sleep. Son did not

speak to defendant and assumed that all the daycare kids were sleeping since everything was quiet.

¶ 6. In the afternoon of January 24, Defendant fed H.B. her second bottle for the day

and put her down for a nap in her crib with a blanket. Defendant checked on her frequently and

noted that she was “breathing a little bit heavy” and kept pulling the blanket up. At 3:00 p.m.,

2 defendant found the infant unresponsive in the crib. Defendant yelled for help and banged on her

son’s door. She told her son and his fiancée that H.B. “wasn’t breathing” and that she had

performed CPR but had not found a pulse. Son, who was studying to become a nurse, took H.B.

from defendant’s arms and began performing CPR. He asked his fiancée to call for EMTs. Son

did not find traces of a pulse or breathing. He noted signs of cyanosis, a sign of oxygen deprivation,

around H.B.’s nose and mouth. He continued administering CPR until EMTs arrived.

¶ 7. Defendant’s tenant, who was upstairs and heard commotion, came down to the

daycare. Defendant was shaking so badly in trying to text H.B.’s mother that tenant took the phone

and texted mother. Mother called defendant immediately, but an EMT picked up and told her that

H.B. was having trouble breathing. Mother called father and told him to rush to the hospital.

¶ 8. EMTs took H.B. to the hospital via ambulance and continued emergency care for

her. Mother and father met at the hospital, where they saw H.B. “really pale” on a table,

surrounded by nurses and doctors giving her CPR. H.B.’s condition did not improve, and doctors

declared her dead shortly after her arrival.

¶ 9. After EMTs removed H.B. from the daycare, defendant prepared the other children

for pickup and cleaned up. She did laundry, including washing the clothes that H.B. had been

wearing and the blanket from the crib. Defendant called the hospital later that afternoon and stated,

“I’m so sorry” and that H.B. “must have pulled the blanket over her face.”

¶ 10. The next day, Vermont’s chief medical examiner conducted an autopsy of H.B.

She determined that the cause of H.B.’s death was diphenhydramine intoxication.

Diphenhydramine is an antihistamine contained in products like Benadryl, intended to block some

allergic reactions. The medical examiner explained that diphenhydramine also has a “sedating

effect” because it is a “central nervous system depressant.” In children, the drug can “cause

profound respiratory depression or other cardiac events that can result in death.” The instruction

label on Benadryl warns that it is not to be given to infants without a doctor’s prescription. Because

3 of the danger involved, federal regulations require that over-the-counter diphenhydramine include

required warnings such as a warning not to use for a child under the age of two.

¶ 11. The level of diphenhydramine in H.B.’s blood was 670 nanograms per milliliter

(ng/ml). A single, oral therapeutic dose of liquid diphenhydramine results in an average peak

blood concentration of 81.8 ng/ml. There was also diphenhydramine in H.B.’s stomach and urine.

The medical examiner explained that “the presence of diphenhydramine in [H.B.’s] stomach”

shows that it “was taken by mouth” and that “it hadn’t all been absorbed” at the time of her death.

The medical examiner could not say how much or when exactly diphenhydramine was

administered, but she opined that at least one administration must have been shortly before H.B.’s

death because “it hadn’t been all digested” which would take “up to a few hours.”

¶ 12. H.B. had not been prescribed diphenhydramine. Her mother, father, grandparents,

and other regular caretakers all testified that they never gave H.B. any medication containing

diphenhydramine. Every person who cared for H.B. near the time of her death, including

defendant, denied giving her any medicine containing the drug.

¶ 13. Following the close of the State’s presentation at trial, defendant moved for

judgment of acquittal on all counts under Vermont Rule of Criminal Procedure 29. Defendant

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