Douglas was born in Sault Ste. Marie, Ontario. As an adolescent, Douglas had a difficult time in high school. Her mother allowed her to change school districts to get a fresh start. Her participation in dancing helped her to eventually make more friends. It was through dancing that she developed an interest in the arts. She thus became involved with the drama program at her high school, which she enjoyed. However, her mother was not initially supportive of her decision to pursue acting.
Douglas described her role on Being Erica as a "wonderful opportunity". She also praised the writing on the show.
About her role in Saw 3D, she stated that even though she was in the movie, she has not seen any of the films in the franchise because they "terrify" her.