I'm finding this really awkward.
We are a large group of friends, all parents, all our kids are ages 5-7. We often all meet up, suggest others tag along in the group chat if one of us has fun plans, etc.
My trouble is one little one, will call Sally for the sake of this thread, has upset or scared my child several times now, and the last incident scared my child so much that I've said to them that I will no longer knowingly put them in a social situation with Sally. If we happen to turn up somewhere and they are there too, I will keep a VERY close eye and be in close proximity at all times (and probably stay a shorter space of time).
Things in the past have involved Sally taking an integral part out of my child's toy that they were kindly sharing and throwing it in a pond, pushing them off a climbing frame, damaging a toy with their teeth and denying it, that kind of thing. The last incident involved them pushing my child's head under water in a paddling pool in our garden. Each time Sally has been playing nicely and then very quickly done these things, and seemed completely unphased each time while my child has been sad or scared. I had written it off as them being excitable and impulsive but the last incident if I'm honest scared me too. I'd literally turned to put something down and it happened so quickly. The same day of the paddling pool incident they'd done something very similar to another child too.
I don't plan to purposefully exclude Sally from group things e.g. invite every other child but her. I'd never do that to a child or their parent. I will instead focus on planned 1:1 kid playdates for a while, mostly with their school pals, or just family stuff and say we are quite busy.
I know Sally's mum has had other mums distance themselves (e.g. NCT mums) and I know it won't go well trying to discuss it with them. Mum doesn't want to see or address the behaviour.
What would other's do in this situation? Do you think my plan going forwards is okay?
I've apologised to my child and told them going forward they choose which kids we plan to play with or meet up with, and explained it's fine to decide for themselves on their own friends (which they have - they've clearly told me they don't think Sally is a kind friend) as long as it's not an everyone's invited except Sally sort of scenario. My child is quite shy and quiet, and I feel sad for them that they will likely see a bit less of the whole wider friendship group now but don't see what else I can do other than step back a fair bit.