Hi mumsnetters, I genuinely don't know if I'm being unreasonable about this particular problem so please help me! My MIL is a tricky person, diagnosed personality disorder along with a host of other issues, she is very negative and has been nasty about me for the whole 16 years I've known her behind my back, face to face she is pleasant enough. She adores my 2 DS and they her, however she treats my eldest DS as if he is the second coming, she has openly admitted she prefers him and sees her as 'hers' whereas my second DS she describes as 'theirs' meaning my family's. She only wants to see them separately but plans for my second DS always seem to fall through so she sees him far less. He notices this and has started pulling away from them. I hate it as it seems like such obvious favouritism. My FIL always used to seem so rational but he also agrees they only want to have them on their own as they can't cope with both. He thinks they need time apart from each other, which may be true. They go to the same school and we generally have them both together so it's possible they would benefit from time apart. My DS are 6 and 4 and get on well mostly. I'm conflicted as I know my own views of my MIL may be tainting my opinion but aibu to dislike them seeing them separately?