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Twin Girls Allegedly Killed By Psychologist Mom Had ‘Large Amount Of Sedatives’ In System, Authorities Say

Michele Boudreau Deegan planned to kill her 7-year-old twin daughters before taking her own life for several days, according to authorities in Washington state.

By Jill Sederstrom
Horrific Family Tragedies When Parents Lost Control

 A Washington psychologist suspected of killing her twin daughters before taking her own life amid a custody dispute, had reportedly given the children “a large amount of sedatives” before their death, according to autopsy findings.

Michele Boudreau Deegan, 55, and her twin 7-year-old daughters were discovered dead in the family’s Sudden Valley home on Oct. 24 in what authorities are investigating as a murder-suicide, according to a statement from the Whatcom County Sheriff’s Office.

“Evidence from the scene also indicates that Ms. Boudreau planned this event over the course of several days prior to the discovery of the bodies,” the Whatcom County Sheriff’s Office said. “She clearly stated her suicidal ideations and that she would never leave her daughters alone without her.”

Deegan and her estranged husband had been awarded joint custody of the children during a court hearing just days earlier on Oct. 20, which “appears to have been the precipitating event that led to her decision,” authorities said.

Michele Boudreau Deegan Fb

The sheriff’s office ruled out any involvement from Deegan’s estranged husband in the shocking crime.

“His whereabouts during the time line have all been accounted for and he has a strong alibi,” the sheriff’s office said. “Evidence at the scene clearly implicates Michele Boudreau Deegan as the only suspect in the death of her two daughters, after which she subsequently took her own life.”

Deegan had been in possession of a handgun that “was consistent” with the weapon that killed the children, the statement said.

An autopsy determined the twin girls had “a large amount of sedatives” in their system before they died, which authorities said “probably rendered them incoherent at the time of the incident.”  

Deegan and her daughters were discovered dead in the home on Oct. 24 by a roommate who had lived in the multi-level residence and called 911 to report finding his landlord and her children dead in an upstairs bedroom of the home.

Authorities believe Deegan killed her daughters sometime the night before, on Oct. 23.

Katie Elizabeth Mairy Anneliese Deegan Fb

The day Deegan died she had posted a series of articles about the dangers of narcissistic parents on her personal Facebook page. The final post, at 8:48 p.m. on Oct. 23, was a link to an article titled “Narcissistic Parents Are Literally Incapable Of Loving Their Children.”

Before her death, Deegan—who also went by the name Michele Boudreau Angelis, was a practicing psychologist and mental health counselor who worked with individuals, couples and adolescents using what she referred to on her website as an “empowerment model.”

“My goal is to teach clients new ways of perceiving their problem, healthy coping behaviors for responding to their problem, and healthy attitudes & communication skills for working with their families, partners, or work environment so they can make changes in their own life.”

An obituary identified the twins as Katie Elizabeth and Mairy Anneliese Deegan.

“Katie and Mairy's smiles brightened everyone's day as they brought constant rays of sunshine to their beloved Bellingham,” it said. “Their giggles and sisterly love will forever be embedded in our hearts and memories.