'Grey's Anatomy' star Kelly McCreary opens up to ET's Deidre Behar at PaleyFest about her decision to leave the show, which airs Thursdays on ABC. The actress addresses why it was time for her to move on from Dr. Maggie Pierce after nine years, and if she's open to returning in the future. Plus, Kelly’s on-screen husband, Anthony Hill, reacts to her decision to leave, and shares what her departure means for his character, Dr. Winston Ndugu.