Mer and Der went through a hard time together. They both were so shocked by the fact they lost the child they had been looking forward to. A few days after she finally started to cry, Meredith was discharged. As the others were really concerned about her, they tried to get it managed that always someone was with her. When Derek was not able to stay with her, mostly Izzie and Cristina came over. After two or three days, nobody had the possibility to stay with Mer, and so Mary offered to come over from Conneticut to take care of Mer. She also was very shocked about what had happened. She really would have love to be a grandma once again, but now she was really concerned about her son and especially his wife, as she knew it was one of the worst things that could happen to a woman to loose her child.
She took the next flight to Seattle and promised Derek to stay as long as it was necessary.
She helped Meredith with the housework, they went shopping and went for walks with George, the dog. Mer was really happy to have Mary around her, she really liked Derek's mother.
One day, when they came back from their walk, Meredith got a towel to clean the feet of the dog not to get the hall dirty again. She noticed that there was blood on it. George had an injury. She decided not to risk an infection and visit Finn so he could take care of him. She called Derek and told him where she wanted to go. He was a bit concerned, not because of Finn, but because Mer had not been driving a car since her accident. But Mary had no driving license, so Mer had to go. Mary stayed at home as they had invited Thatcher and Charlene for the same night, and Mary wanted to make a Turkey.