Bit of background first, DH and I have a rubbish relationship with his ex. They separated several years before we met but she's treated me like the OW ever since we started to date. She held up divorce, demanded all sorts of nonsense. Luckily the step children are older so we have very limited contact with her now.
We have step "children" aged 18 and 20, five days out of fourteen which includes EOW. The days during the week vary. I've posted about this before and been flamed to death for suggesting this is slightly odd behaviour for two adults and that I'm a terrible step parent. For the record, I'm not saying they aren't welcome, just that I wish they would start to become a little more independent and stop relying on a child contact plan that was set up many years ago when they were children.
We're going on holiday the day after a 'child' contact night, we're leaving super early. I asked DH if we could alter/cancel/suspend the child contact night as it would mean them getting up at 4am and us taking them back to their mother's (no buses at that time) before setting off, meaning everything would have to be even earlier. He said this was OK. At 18 and 20 they should be able to be left alone even if their mother was not at home that evening.
All was well until the ex found out. She went batshit. Saying DH is irresponsible, uncaring, etc.
Who is in the wrong here?