DD (14) is part of an extended group but has a couple of closer friends. They aren't the cool popular kids, some a bit odd ball but in general they are a nice group, I'm very happy for her. She is going on a trip abroad with school for a week. When it first came up DD and one of her closer, oldest friends (J) agreed to go together. 2 others (B & M) from her extended group are also going. One of them (B) is newish to the group and seems can be a bit tricky, a bit of a drama queen but maybe understandable - has had a rough time (parent died, estranged from other etc). A week or so ago B fell out with the M (by the sound of it over something silly) and is now refusing to share a room with her (rooms of 4). She is happy to share with DD and J - just not M. (She has told the school she won't go if she has too - so the school are doing the best to accommodate her [hmm]) The other girls are all in pairs (even if they weren't it wouldn't be fair to M for her not to be in a room with any friends). DD is slightly more friendly with M than J so when asked by a teacher today DD agreed to share a room with her. Worse out of the two pairs of 'other girls' they will have to share with DD has agreed to go in with the pair her group don't really get on with [sad]. (The other pair are more easy going ...and know B from a class anyway) And looking forward it seems that during the trip either M or B will have to be excluded or DD and J won't have any time together. I'm sure DD will have a good time - just not as good as she could have had. (Unless it has blown over by then - knowing B it may well have done -but the rooms can't really be changed.) Part of me is proud of DD... but (the unreasonable?) part of me wants to tell her to be selfish, go back and say no - she is sharing with J as agreed at the start. It isn't her problem. So AIBU? I know I should step back etc -teen politics and all that but.... I think I feel it especially because (partly her own fault) she had a less fantastic than it could have been school trip at primary too, something similar and I didn't interfere as much as maybe I should [sad]