I'm glad you found this thread Sooz.
It actually sounds to me like your daughter is doing quite well considering the circumstances. The trial was very recent and on top of that she has to put up with her abuser's family being close by. That is a huge amount of stress to suffer in one go. The fact that she's holding down a part time job is quite impressive really. I don't think I would be.
I was abused at around the same age as your daughter, and then again at a later age. It affected the whole of my teenage years but I didn't realise that until I started talking about it when I was 19. At that stage I didn't really deal with it and it continued to affect me until I confronted it again when I was about 26. At that stage I ended up having a breakdown and was in bed for two months. To be honest, nearly 4 years later, I'm still not fully recovered from that. My life is going very well, I'm a SAHM to a wonderful son and I have a great husband, but I suppose it's like I'm suffering the aftermath of a bad accident - I have to take it easy and not push myself as any extra stress can send me tumbling again. I don't know if I'll always be like this or if one day I will get my old strength back.
The only reason I rambled on about all that is to illustrate the huge toll dealing with something like this can take on your life. I'm not saying your daughter will never be better but I think it will take time and you need to give her as much space as you can. If you pressure her, then either she will pretend to be ok in order to please you and will end up having to go through all this again at a later age, or she will become very angry and push you away. It is much better that she goes through this healing period now, when she is young, than later when she has more responsibilities.
I know it must be incredibly stressful for you, particularly as you are not well.
When you say she is "stubborn" what do you mean?