[1] In 2021, Park made her feature directorial debut with The Fallout, which won three awards at South by Southwest and was later released on HBO Max.

In the ABC Family series The Secret Life of the American Teenager, she played one of the main characters, Grace Bowman, a conservative Christian teen and cheerleader who, along with her boyfriend, struggle with her purity vow until marriage.

Heelan had originally been cast in the role but was believed to be unable to continue when her sitcom Ground Floor was renewed for a second season.

[6] In 2009, Park, Codi Caraco and Brandi Cyrus formed the band Frank + Derol, in which she sang and played bass guitar.

Park's first feature film as writer-director, The Fallout, premiered at South by Southwest on March 17, 2021,[8] and was released on January 27, 2022, on HBO Max by New Line Cinema.