She graduated from the American Academy of Dramatic Arts, performing in local theater, before returning to Toronto in 2008.

[4] Adeliyi began acting when she was cast as the Artful Dodger in her middle school play Oliver Twist.

After graduating high school, she went to the American Academy of Dramatic Arts in New York City, and has since performed in theatres throughout Canada and the U.S. playing leading roles in Blue Window, A Midsummer Night's Dream, The Children's Hour, Jitney, and Michael Cristofer's play The Shadow Box.

[4] In 2014, Adeliyi was dubbed "Shakespeare’s First Jamaican-Nigerian Lady Macbeth" when she played the role at the Sterling Theatre in Toronto.

[14]Theatre owner Rui Pereira described Adeliyi as "abusive", saying she "slammed her bag on the counter and demanded a ticket", and then refused to leave when told to by staff.