This could get long, sorry.
I live in my house with my two DC and my DM, who has lived with us since my Dad died a couple of years ago.
Living together has been tricky at times in terms of working out our roles / responsibilities and just learning to run along together.
One thing about mum living with us is that other relatives assume they can just drop in at any time - generally okay as most people know about manners and not overstaying their welcome, etc. Except my nephew (22)
He will constantly message of a weekend asking what I’m doing and whether he can come round - if I say I’m busy or not there, he’ll ask if he can come and see his Nan - which would be fine, except he will chat to her for ten minutes and then spend hours wandering the house, using my son’s computer and games consoles and messing up his stuff. My mum doesn’t seem to see a problem and won’t enforce any sort of boundaries, but will complain about him afterwards. Last week, we were away and my son specifically asked his Nan not to tell my nephew go into his room and use his things. Of course, nephew turns up, stays all day long, plays on games and computer - and breaks my son’s camera. I’m furious, and dreading the inevitable text from my nephew asking if he can come over this weekend. Even if I say no, I know he will just turn up - AIBU to refuse him entry if he does?