Hi,
I just wanted to tell you about my experiences and that my life was/is a bit like your DD's.
Has she said why she hates sleepovers? Anything in particular about them?
Did she have any friends at primary school? Could she get back in touch with them?
Do you think she could possibly have a problem with reading signs/ misinterpreting people or any annoying habits? (Not suggesting this is ur DD's fault btw).
Could you pull her out of school and home-educate? At least then she may keep some of her self-esteem. When I was at sec.school I remember an overwhelming sense of dread that I would be left on my own at lunchtime, no-one to work with for pair-work, picked last for teams etc. It dominated those years.
If I was seen alone, idiots would shout, 'LONER! LONER!' at me.
And some of the teachers weren't much better, a spanish TA, once said to me one lunch-time, when I was doing some work in a classroom, (I had a lovely tutor who let me stay in there at lunchtime), 'Why don't you have any friends?', I didn't know what to say :(
The overwhelming thing for me has been the sense of shame surrounding it. I never told my parents and tried to pretend things were fine, etc. Is your DD quite open about discussing her lack of friends?
Because I really wish I had been more open and honest about it- I may have solved the issues easier.
BTW, things got worse for me, I did stupid things to try and get friends- I drank to excess, started smoking etc, as an attempt to be more accepted (only worked temporarily).
I also put up with horrible friends and boyfriends who used me basically, cos I just wanted to have someone.
Good Luck