Hi @Lushmetender
I agree that 9 seems peak age for things becoming complicated for many girls. Like PPs I think it does have to do with hormones. But please don't fall into the 'girls are horrible' trope - some are, some aren't, although they certainly seem much more complex characters than boys at that age! FWIW, the bitchiest character ever in my DC's was a boy. He was just awful.
Just wanted to add my experience. I have a 12 YO DD who went pretty much through the same as your DD from age 9. Her last two years in primary were spoiled by the class politics, including her hitherto 'best friend' suddenly excluding her and getting all the other girls to exclude her too. This was a very small cohort. DD cried often and dreaded school every morning.
I went into the school when things came to a head, and DD was actually told off by a TA for 'not wanting to play with the others'
. I told her teacher that she had been bullied for several months, on their watch, and they hand't even noticed. 'Bullying?!' - the teacher asked, horrified. Well yes, those 'lovely' girls are bullying DD by exclusion. Which is the worst type of bullying there is. It's insidious and gets under their skin for life.
School did their best from mid year 5 onwards, and things improved slightly, because school was aware I was shit-hot watching them and knew who the bullies were. I did ask DD if she wanted to change schools but she declined. I couldn't wait until the end of year 6 - then covid arrived.
Just like I knew it would, Secondary School was the best thing that could ever happen to DD. Large pool of friendships, new beginning. She now has a small group of truly nice 'odd' friends.
DD is one of the 'odd' ones - and thank god like a PP said! The reasons for DD being excluded boiled down to her not liking the same sutff most of the others liked (same films, same clothes, same music - so her 'oddness'). And perhaps a touch of jealousy as DD is quite academic. That's it.
The 'lovely' girls in her primary school were your 'normal', generally pleasant, sneaky, butter wouldn't melt type children - on the surface. They fooled teachers and parents right, left and centre.
I really would speak to the school and stress how serious this is.
After-school activities away from people from school are also a life saver.
Just seen your update. I am a bit confused about the sexual orientation elment? Is this what her new friends have been talking about?