where did cristina yang go in season 11
Grey's Anatomy (season 11) The doctors at Grey Sloan Memorial must get used to the fact that Dr. Cristina Yang (Sandra Oh) is now in Switzerland, but they find it difficult to like her new replacement, Dr. Maggie Pierce (Kelly McCreary). She tries making friends with the doctors, but the one she’s really interested in learning more about is her half-sister, Dr. Meredith Grey (Ellen Pompeo). Upon hearing Maggie's news, Meredith doesn’t believe her. Trying to prove her wrong, Meredith pores over her mother’s journals to see if there might have been any evidence of truth. What she finds is that the pieces fit, and that she and Maggie are in fact half-sisters. Not too keen on the fact that she has a sister whom she didn’t know about until now, Dr. Derek Shepherd (Patrick Dempsey) uses his love for his big family to draw Meredith and Maggie together.