More of a WWYD really.....
So yesterday SIL turned up at 11.30 stating she was having issues with her dp and wanted a chat. She stayed til one when suddenly announced she was going to the pub for a couple of pints(?) But would be back later. I had nothing on yesterday was just pottering so said yeah that's fine. She took DN (11) with her. I popped to my mum's with my 3 DC (ds10 dd3 and ds2 3 months). Then had a call from her phone around half 2. It was DN stating he was bored at the pub could he come round. I said that's fine as DSiL was supposed to be coming back round to mine anyway.
2 hrs later I had made dinner so fed DN. No text etc to state where she was.DN then piped up that she had arranged to go with her DP to another friends house for a piss Up!
Long story short couldn't get hold of her all night DN who is iffy about staying out at the best of times wouldn't sleep or go to bed until midnight in case she came back. Had to move dd from her room to make space for the boys to sleep together. Dd was unsettled by DN crying and woke up, my sensitive DS is very upset for his cousin and none us us had a good sleep. It's now half past 8 and still not heard from her.
My DH is due to pick her up for work in 15mins although he feels like he should.bloody well leave her in bed.
So WWYD and how would you approach it? She has form for apparently forgetting she has kids (2 elder DN who now at university). I don't like confrontation but feel like she has royally taken the kids especially as she's gone out with DP who she was stating that she was going to leave just a few hours before!