My DD14 is going through some serious friendship issues in school. The usual stuff among teenage girls but on the nastier end of the spectrum: bitchiness, betrayals, backstabbing, telling lies about her behind her back, what feels like a lot of people turning against her... It seems a sad general state of affairs that, from what I can tell, none of it is massively unusual.
School have been involved, which has done some good and some harm, but that's another story. She seems to be just about coping and is not completely lonely or ostracised as she still has a small group around her. But she is upset and struggling - sometimes is really fed up, sometimes a little happier, and sometimes she clearly wants to avoid even thinking about it.
The reason for my post is that I am really struggling with it all. It hurts me so much to see this happening to her. So much that sometimes I don't know what to do with myself. I'm struggling to sleep, I often want to cry, my stomach is in knots, and I am very worried, scared and anxious about the whole thing.
I think/hope that she sees relatively little of my anxiety - we talk about what is happening, I encourage her to share her feelings as well as what people said or did, I listen to everything, I praise and support and encourage her as much as I can. But she knows I'm worried, and my support is often not as good as I'd like it to be because behind the scenes my anxiety and fear and worry for her is working overtime.
I know this is not about me and I have no intention to make it so, so I would appreciate any advice on how to have a good talking to myself, get some perspective, stop catastrophising and expecting the worst, and basically make things better for her in whatever way I can. Please be kind, though. 
Sorry for this long post and thank you if you've read it all!