[3] As a teenager she began appearing in films and television programs, beginning with a minor role in Went to Coney Island on a Mission from God... Be Back by Five (1998) as the twelve-year-old Gabby.

In February 2002, Breckenridge landed a role on Broadway in a revival of Arthur Miller's The Crucible,[4] appearing alongside Laura Linney, Liam Neeson, and Kristen Bell.

In the fall of 2002, Breckenridge began her studies at Princeton University, soon joining the BodyHype Dance Company and getting involved in the theater scene on campus.

Breckenridge also appeared in the films Let Them Chirp Awhile (2007) as Dara, The Favor (2007) as Young Caroline, Beautiful Loser (2008) as Tracy, and Amusement (2008) as Shelby Leds.

[3][6] In 2010, she graduated from Princeton with a Bachelor of Arts degree in Classics,[3] having submitted a senior thesis on "Confronting Medea: Exploring the Duality of the Other".