answer:Your friend sounds very immature and irresponsible. Perhaps she will grow up, perhaps not. Only time will tell. You have a responsibility toward her that consists of being willing to listen to her when she needs to talk, but nothing beyond that, I would think. As to the age difference, I can’t say anything since my wife is 15 years my junior. We have a wonderful relationship, but that’s largely because we truly love one another and would do anything for each other. Doesn’t sound as though your friend and her new husband have that sort of relationship.