There is a massive backstory to this, the basic jist is that DD's father was violent and abusive towards me, and shit with DD. I finally walked away when she was 1 (she's 6 now.) He had contact for a while but it was sporadic and he was never very interested in her. He stopped contact 4 years ago and I've never heard from him since.
ExMIL has maintained contact with DD, she sees her about once a month and is good with her, she obviously loves DD. However, she has gone against my wishes a few times in the past when looking after DD. I have only recently been able to trust her to have DD at her house for the odd afternoon here and there. DD always comes back happy, laden with gifts and has a good time. DD is due to go there on Thursday for the day and ExMIL has now asked if she can have her overnight. DD's cousin, who is around the same age as DD will also be staying the night, she and DD adore each other but don't get to see each other often.
My main reasons for saying no are:
- I am worried that Ex might show up there, planned or not, which would confuse and upset DD.
- MIL lives with her boyfriend, I don't know him very well at all, only met him twice, and I don't trust MIL's judgement when it comes to men.
- That family are generally trouble, I have witnessed so many fights and arguments in that house which I wouldn't want DD to be exposed to. In fairness, all of her sons have moved out so there is unlikely to be any trouble now unless one or more of them turned up there.
So what do you think? AIBU?