Some years ago my wife worked for a woman a few miles away and over the years we got to know her and her husband quite well and enjoyed visiting them or them us. Everything was fine until both we and they had children.
We both had two children and continued to socialise a lot but they turned out to be the most god awful parents you can imagine. At least from our point of view. From the moment we arrived with our children to the moment we left they would shout at, criticise or otherwise humiliate their eldest child, whose behaviour seemed fine to us. The worst part was that they would constantly say "why can't you be as good as ..." meaning our eldest child.
Surely as a parent very instinct tells you how wrong this is.
Eventually their eldest childs behaviour did deteriorate - presumably because of their lack of parenting skills.
We drifted apart from them and heard later that they divorced.
The wife has remarried and I just hope those children have had a more stable environment.
I just wonder what other people would have done in the same situation.