OMG! Serious déjà vu!!
Our situation was similar, but we also happened to live next door to the family. It was hell, as it was not only school run, school playground, parties etc.. It was every evening and weekend.
I laid back and took it, all to keep the peace, my sanity and the fear of my daughter seeing me being horrible to people.
I just didn't want to lower myself to their level.. I say their, as she roped in the neighbour/friend on the other side of us.
I put on an act for 16 months.. Smiling, civil, 'it's not affecting me'... But inside, honestly, I was dying. ( I'd just had our third baby)
After a while, we weren't allowed to play outside with any of the other kids. She monopolised everything it felt.
Then, our daughter began to slowly be affected by what going on around at home and the school run. They were clever, never did anything at school.
But one day, I was pulled into see the teacher and she asked me what was going on at home,
I fell to pieces, explained everything .
We decided to pull our daughter out of school and we got her a place at our dream school the other side of town. Then we sold the house and found our dream home too.
Word spread like wild fire in the playground and I opened up to other parents about it. Let's just say, the harpies were not the flavour of the playground anymore!
18 months later, we are so very happy and are well integrated into life here. No regrets.
My situation, don't forget, was masses worse as they were neighbours.
If it was just at school, I would've hoped I could've detached myself more,
I think you've been given some great advice so far,
My advice, is don't do what I did, stand back and be walked over,
(I mean no offence by saying you are a door mat. You're not, but I bet, like me, you've never been in this situation before. I was bullied at age 36 for the first time by those harpies! )
There is a lot to be said for holding your head high and being a lady.
I don't believe you are a 'fuck you back' kind of person... And why should you have to change yourself for them.
But, I think you need to find a way to toughen up and to 'take control', for your daughters sake. I wish I did, a bit sooner,
Let us know how you get on. Xx