McAllister is an artist, writer, psychologist, activist, and person with lived mental health experience. She has published writings, is writing a memoir about her mental health journey, she works as a psychologist doing neuropsychological testing, and she volunteers her time helping others with mental health conditions and their loved ones.

In her drawings she uses bold contrasting colors to highlight the complexity, divisions, and intensity of her inner experience. Her writing is raw and honest, unafraid to shine a light on her personal journey.

Her artwork has been part of several exhibitions starting in 2026 and she is a member of her local artistic community, Maynard Artspace.