Broch has been doing theater since elementary school and she studied drama at Hartvig Nissen School and Romerike Folk High School. She quit school in the spring of 2007 in order to begin filming The Manitoba Who Loved Yngve. She joined the Norwegian National Academy of Theatre in the fall of 2008.
She is the half-sister of Nicolai Cleve Broch and Christian Cleve Broch. Broch played Catherine in the film The Manitoba Who Loved Yngve and had a starring role in the film Switch. She also has a starring role in Norwegian television series "The Third Eye", where she plays the charming police detective Mari Friis.
She had a featured role in season 3 of the Netflix series Lilyhammer.
