I think motomad's made a good suggestion. Obviously your daughter's nice and friendly, but perhaps a hobby of some sort might give her the confidence to be who she is, rather than chase after friends. A martial arts class could be of benefit, and she'd meet like-minded youngsters. Some of her old pals might want to join as well if they saw that she enjoying something. Could she take ballet/ ice skating/ horse riding up? Also, joining a drama club could be the sort of thing she'd like. After saying all that, she's only 10 year's old. It's natural for her to want to be with friends, so let her find out for herself how people can be, but be there for her if she fels left out a bit. Best of luck.