Thank you everyone for your kind comments and concerns. I know this wasn't the focus of the thread, and it's so sad to hear of other peoples children/grandchildren being in a similar position.
My main gripe is the lack of being able to do anything, as a parent. I can't just go round there and do to their mothers what they've done to my child. If I stamp on someone's head then surely it's attempted murder. Because they've not been prosecuted, the police have warned me that I could be done for slander if I shame them on social media.
I lay awake at night feeling so helpless. I've been called shallow by some of my friends for putting my job over my child. Yes, if I'm done for assault, I lose my job. And then who puts food on the table? So in my eyes, I AM protecting my child as I'm keeping her fed, clothed and watered by not losing my job. I cannot move her schools as they're all full. Even a managed move has failed to materialise...and even this winds me up that I'm having to look for a new school for MY daughter when she's done nothing wrong. Out of area schools are full, best we've been told is that we're 9th on the list. So as the two responsible are at school, it leaves my daughter at home, doing no work, literally living in limbo.