Son is really worried but any attempt at conversation with his ex results in her threatening to stop access. He knows this won't happen as she has a very busy social life that doesn't fit with full time parenting. She has no filter and will start screaming arguments in front of children. She's already had police and social services involvement for failing to prioritise children over violent ex. So we don't have a reasonable human being here. I suppose my question is, is this situation 'wrong enough' to involve social services?