This is not really a major issue as things go but would just appreciate the advice.
We are very close friends with another family near us. Our children don't go to the same school, which is a good thing. However, the father of the family is probably verging on the emotionally abusive to his wife (my friend) and his children. He shouts horribly a lot of the time - shouting aggressively at his kids to "shut up" or "get off" if they try and hug him. He's weird with his wife in front of other people - not affectionate but "gropey" and swears in front of the kids (ours and theirs) and I know from her, that he pressures her for sex.
I spend some time with him on my own - shared hobby - and he makes the odd inappropriate comment which I just ignore but makes me feel uncomfortable nonetheless.
I have in the past had long conversations with my friend about her leaving him. She is deeply unhappy and I've always said whatever she decides to do I will support her.
The breaking point has come when her DD (10) is now also swearing a lot and has started being horrible to my DD (8). They always used to play very well. The boys still get on fine.
I feel that I need in some way to "protect" my own family now. Days with the two families together are not nice as he is always bellowing and shouting and now the DD is being horrible - I understand why - she sees her dad treating people like that and thinks that's the way forward.
How do I take a step back from them as a family while still supporting my friend. I love her dearly and really want to keep being there for her so I can't just cut all ties.