Best known for her role on Grey's Anatomy as Amelia Shepherd. She also played a role in the series Missing.
She had her first TV show experience on the Canadian children show Mr. Dressup when she was eight.
She starred in the show Alice as the lead character, Alice Hamilton.
She married Rob Giles in 2009. They have three daughters named Eliza, Paloma and Arwen. In May 2020, the couple filed for divorce after being married for ten years.