[2] As a child, Sears contracted flesh-eating disease, where she stayed at the Ronald McDonald House while receiving treatment at the Children's Hospital of Eastern Ontario.
[2] Shortly after graduating, Sears made her professional stage debut in the Canadian premiere production of Kinky Boots, where she played Nicola.
In 2016, Sears starred as Dorothy in a production of The Wizard of Oz by Young People's Theatre in Toronto, for which she won a Dora Award for Outstanding Performance by an Ensemble in a Musical.
[12] During the 2019 Stratford Festival season, Sears appeared as Ronnette in their production of Little Shop of Horrors and as Dead Mum in Billy Elliot the Musical.
[15] The musical, which starred Jully Black and Measha Brueggergosman, played at the Winter Garden Theatre between January 30 and February 15, 2020.
[18] Later that year, she played Regan in the world premiere production of Queen Goneril by the Soulpepper Theatre Company, for which she won the Dora Award for Outstanding Performance in a Featured Role.
[19][20] Sears also played Red Queen / Ruby in a regional production of Alice in Wonderland, which earned her a Dora Award nomination for Outstanding Performance in a Leading Role.