Having settled back into life in Seattle, Meredith hosts a dinner party and at the party, Callie brings her new girlfriend, who is revealed to be Penny, the intern who worked on Derek at the hospital the night he died. Later at the event, Meredith finds out Penny will be joining her at Grey Sloan Memorial. Meredith is forced to work with Penny, and over time, decides to effectively train her to be a better surgeon. Meredith eventually forgives Penny, who becomes her favorite resident. Alex and Meredith continue their close, sibling-like relationship of being each other's "person", despite Jo's displeasure and inability to understand their closeness. He supports her when she is violently attacked by a disoriented patient, and she supports him through his legal difficulties. Alex initiates a weekly family waffle breakfast on Sundays, where he makes waffles for everyone in the house.