[1] Early in her career, McCook had minor roles in television's 10 Things I Hate About You and Glee, both filmed in 2009 and released in 2010.
[citation needed] She acted in a five-episode arc of the soap opera, The Bold and the Beautiful, with her father, John, a series regular, in 2010.
[citation needed] In 2012, McCook appeared as Madison Evans in a four episode arc of the short-lived, low-budget series, Never Fade Away.
Since 2019, McCook has appeared on the Freeform network in the recurring role of court clerk, Rebecca, in season one of the Good Trouble spin-off of The Fosters TV show.
[4] In 2015, McCook originated the stage role of character Annette Hargrove in Cruel Intentions: The Musical in Los Angeles, the part played by Reese Witherspoon in the film.