Be careful bro I just got done with a girl in a similiar situation. She was always upset with him and shit like that. Funny part is she goes back to the ex and not three weeks later finds out he has been sleeping with her pregnant best friend. Thats ****ed. N-e ways I would wait it out for awhile and see how she is doing bout the ex, also don't be shy about badmouthing him to her just don't take it to far. She might not like that.