She is known for her starring roles as Jessica Olson in the 2010 Disney Channel Original Movie Starstruck, Simone Daniels in the 2011 Disney film Prom, Davina Claire in the 2013 CW television drama series The Originals and Kayla Powell and Olivia Moon in the 2018 CBS All Access television psychological thriller series Tell Me a Story.

[4][5] She also appeared in a nationwide commercial for Build-A-Bear Workshop[3][5] and played the character of Darla in the 2008 movie The Poker House.

She starred in the movie Prom, released on April 29, 2011, co-starring with Nicholas Braun, Nolan Sotillo, and Aimee Teegarden.

[3] In 2013, she was cast in a starring role on the television series The Originals[8][9] as a powerful sixteen-year-old witch named Davina.

Campbell was also cast as Ellie Reed in the 2016 television series SINs, and Maddy in the 2017 Fine Brothers production F the Prom.