I really don't know why I'm surprised. They have a history of being completely disrespectful.
Anyway, ex DH and I separated four years ago so I haven't seen them for a while. In the last six months ex FIL has had two small strokes. He was unaware of where he was and why he was there when they each happened. After the first the medics weren't too concerned but after the second it became clear that this might be an ongoing issue. Unsurprisingly he has not been allowed to drive. I made it clear to ex dh that our dd(9) was not to be in a car driven by ex FIL as I suspected he was still driving. I was assured not.
Dd has just returned home and told me that her gps stopped in the road and swapped drivers once they were out of sight of family. Ex Dh to be fair didn't know about this but I am still furious. There is no reason why ex MIL can't drive, it will just be ex FIL deciding that he wants to so he's bloody well going to do it.
I can't let her go and stay there again can I? Seeing as they take absolutely no bloody notice of what her parents say??