Who died at home, and when Rick went to the funeral how did he feel?

Rick's grandmother, Miss Abigail, died of pneumonia. Rick went home for the funeral and saw his brothers, along with much of the rest of his family. His mother didn't go because she thought she might not be able to handle it. Rick felt very lonely and thought he was paying the price for pretending he didn't need anyone. He left early in the service to see Margaret.