DSIL is in a ridiculously on off relationship which is toxic and needs to finish for both of their sakes.
Increasingly regularly, after a huge row she will end up at our house and we will have to handhold her until she’s ready to return to face her partner. They usually then make up, have a good few days and the cycle repeats.
On Saturday, she called my DH in tears and said her relationships over and could she stay at ours for the night. No problem - I set up our spare room. Note that it is myself, DH, DD4 and DS6.
Saturday night, she told us she was going out with her friends and we gave her a key to let herself in, and she assured us she wouldn’t be late or loud.
Anyway, we were woken by her making a racket when entering the house at about 1.30am Sunday morning. We then heard her making ‘shush’ noises which was strange. It was then clear she wasn’t alone. DH told me to be quiet and pretend we hadn’t heard her.
No less than 10 minutes later, I heard her making loud, exaggerated moaning noises (it was obvious what was going on). DH pretended he couldn’t hear anything and told me not to say a word.
Not long after the door went again (whoever it was left), and we heard her walk back upstairs.
I was incandescent at this point, how dare she bring a stranger into our home where our DC were sleeping. It could have been anyone.
I confronted her in the morning, in my anger I regrettably used some unwise language and she was really defensive, said it’s someone who works at her gym so not a ‘random’ person. DH tried to diffuse things but it fell on deaf ears, anyway she has refused to apologise and has been acting the guilty party to DH for what I called her.
I stand by that she was massively unreasonable to bring a stranger into our family home. AIBU?