7th grade daughter has joined a new friend group. Her best friend is excluded and deeply hurt by this. Is there anything I can/should do?

My daughter has a long time best friend. They’ve always been super close. This year my daughter has made new friends. These new girls and my daughter are more girly than the best friend. They like to talk about boys, clothes... they are loud and silly. Nice enough kids but definitely cliche middle schoolers. They, and my daughter in particular, can be obnoxious and self absorbed.... The best friend is into sports and has a more mild temperament. Needless to say, she doesn’t fit it in with the new girls.My daughter and the bf still hang out outside of school, but in school the bf is left out. She isn’t included in their group plans, isn’t told the secrets... she stopped sitting with them at lunch and instead eats alone in the library. I know this because I talked to her mom about it.Per the other mom, none of the girls are being outright mean, it’s that subtle “clique” thing that girls do but it’s VERY hurtful to the bf. I’ve discussed it with my daughter several times. She’s saying pretty much the same thing except she doesn’t think her bf is upset about it, they are just separate friend groups.I’m at a loss here. I know I can’t make them stay friends or magically make the new girls like the bf, but I would like to get my daughter to understand how hurtful this is without outright telling her I’ve been talking to the mom. She is so so stubborn. Every time we talk about it she insists everything is fine because the bf would say if she’s upset. Her lack of empathy is very disappointing. The last discussion ended in a big argument so clearly what I’m doing isn’t working.What should I do here? Do I leave it alone? Is there something I can say to her? Tomorrow is Halloween and this poor girl is staying home alone... via /r/Parenting https://ift.tt/2yGChgk