Marie Antoinette Adeline Célestin (née Desjardins) is a Québécois immigrant originally from Montréal, Canada. She is a skilled cellist, often being the section leader in both her high school and university orchestras. She graduated from the Université de Montréal, where she received her Bachelor of Arts in Psychology.
She moved to New Orleans not long after she graduated, and it was here that she met her husband, Estéve Florentine. As an Army wife with a talent for music and passion to heal the broken-minded WWII veterans, she became part of the music therapy R & D programme at Walter Reed Army Medical Center. Eventually, she suffered compassion fatigue from dealing with back-to-back illnesses, both at work and in her home life. She was able to recover quickly after receiving help from a Military Family & Life Counselor, as well as the support of the military spouse network on base.
One day, a fellow 'health-care professional' approached her to join the Human Ecology Fund. Unknowing that the person actually worked for the CIA, Adeline signed up in hopes of curing her daughter's Bipolar II disorder. It wasn't until Lisette completed her rehab that Adeline was debriefed on the whole research team truly being part of the CIA's sinister Project MK-Ultra. Devastated at what became of her daughter, Adeline turned to teammate Dr. Carl Rogers for help. Together, they devised a treatment plan for Lisette's recovery.