I've a DC that has been the subject of bullying. Leaving DC out, asking DC to play then running away from DC, deliberately excluding DC and isolating DC from other kids in the class where DC has had nobody to play with.
I know the mum well, however they believe their DC is sweet and innocent and wouldn't believe their child would be involved in anything like that so I haven't approached the parent, I tried gently previously and it was shot down as their DC denied it. They are very PFB about their DC.
So I've tried to go via the school, trying not to make a big thing out of it, I've tried to see if giving them time apart would help heal the rift, if encouragement of different friends and interests and starting my DC at clubs outside school so they can meet friends there.
I can tell you it's absolutely heartbreaking every day, my child coming home to tell me they were excluded or lonely again in school. Having them cry at bedtime because they are worried about the next day at school.
So friend 1 has my absolute sympathy. I'm at my whits end, I know approaching the other parent won't end well (I'm not sure I trust myself to be as unemotional about it as i once could have been) and school have/are trying all they can so if friend 1 has gotten to the point of moving her child school she must have really exhausted all other options. I suspect the reason she hasn't approached friend 2 before now is because she knew this is the response she would get and was trying her best to preserve some sort of friendship.
But somehow you're painting friend 2 as the victim and the wronged party here and friend 2 seems to be lapping up that role.