Long story, but the crux is that 14yo DSD1 and DH had a disagreement almost 3 months ago and she hasn't spoken to him/ seen him since. We normally see both DSDs most weekends. He/ we have tried everything - asking to meet to talk and get things resolved, giving her time and space, not making a big deal out of it and trying to return to normal with some nice texts, leaving messages saying she's very loved and missed, asking her mum for help to resolve the problem etc etc. Nothing has worked and we keep hearing from her mum how upset/ angry/ hurt DSD is because she says that DH doesn't like her/ hates her. She opened up to me at our son's 1st birthday (who she absolutely adores) last weekend when she was extremely tearful and i thought i had made progress. I explained that DH is also very upset and just wants her back. I said that people can dislike someone else's behaviour/ attitude at times but still love them deeply. I listened to her, reassured her and said that the only way of feeling better again would be to speak to DH and sort things out. It seemed like i had made progress. Today, DH received a text saying she didn't want to meet DH and talk on Sunday, because there would be no point because she's said everything she has to say to me instead. I cannot see an end to this and can't stand seeing my DH so upset. We have never had any problems like this before.
I know that teenagers are prone to overreaction and angst, but this seems like such a huge overreaction to a relatively minor disagreement which has been blown out of all proportion that i simply don't see how it can all be because of my DH. Could it be that she is depressed? She did mention to me that she had been stressed with exams and 'other things'. She has also been seeing a 16 year old boy for 5 months. She has never been very good at displaying emotions and feelings in the 9 years i've known her. But her current behaviour is completely irrational and we are at a loss to know how to deal with it.