I would be open with her about some of the factors that produce these dramas. My mother did that when I was about that age... it helped to know that it was common, didn't actually have much to do with me (if anything) and that it eventually goes away.
ITA with ConnectingDots. I have a dd going into 8th grade next year, and I've seen it happen both with her friends, and with the girls in my older ds' grade when he was around the same age. The thing with *both* sets of kids is - it passed. Truly. Some of the kids had a bit of a drama-edge to their innate personalities and that didn't go away, but the overall hormone-spiked group drama of that age *did* pass, and passed relatively quickly.
I agree with indigo too - setting up individual hang-outs with girls from the group isn't necessarily going to help and it might just spark more drama. I'd actually recommend two things - first, I'd set up group activities with the full group every now and then so your dd can stay connected. It might sound counter-productive, but I'd do that with the thought that yes, there's drama at the moment. No, these girls might not be friends forever, but yes, they are friends now, and let's let them have some fun together over the summer.
Then I'd also do what cd and indigo both suggested - look for activities where your dd can meet and make a few new friends. There is always room for more friends
Especially today, the friends don't even have to be local!
This is very true, but as the mom of a 13-year-old in the age of social media, I'd also be aware that real-life drama can increase 1000-fold in an instant when kids are communicating online... which most 7-8th graders I know are very caught up in.
Best wishes,
polarbear
