Grey's Anatomy: Season 7, Episode 6

These Arms of Mine

A documentary crew visits the hospital six months after the shooting to document the road to recovery for doctors and patients. Meredith helps Cristina put on a brave face for the cameras. Meanwhile, Mary Portman (guest star Mandy Moore), a former patient and survivor of the shooting, returns for a surgery she was supposed to undergo on that day. Alex works around the clock to help a little girl in need of a new trachea, and Arizona has a difficult choice to make when a professional opportunity requires her to move to Africa.