I am experiencing similar things on a smaller scale with my 12 year old
daughter too, Marty, and I always thought: three friends is one too many, regardless if it's girls or boys or ....well
Even when I look back at my situation at that age, whenever there
was three of us girls, it didn't take long and we would fight about something
trivial and one would always take sides with the other, depending what
side was better to be on.
When my daughter has her "BFF" over, everything runs smoothly and
they're having a good time. Enters another "BFF" into the picture, we've
got a problem sooner or later. It always ends up with one of them
being upset and the others defending their position. So, I narrowed it
down to one "BFF" *sigh* at a time, or in even numbers. If I have
four or six girls at the house there is rarely a problem.
Well, I hope that your daughter was able to go to the show regardless,
after all, she wanted to see the band boy again