She had issues with her topless scene in Project.

According to Starpulse.com, Knapp's nude scene left her morally conflicted. It required her to strip topless during a make-out session with another character. Part of the problem for her was that since Project X was her first big break, she didn't want to only be known for her looks. Ultimately, she eased into the idea of the scene, conceding, "You gotta do what you gotta do."