Okay to start of me and my fiance F21 and M23 were supposed to receive a house from his parents as his grandfather passed and his parents moved to the grandfathers house. Well that was impeded due to my future sister in law F32 “needed “ to be taken out of a situation she put herself in. She had a house with her 3 y/o daughter and she allowed her baby daddy M55ish to crash on her couch until he declared himself living there well after 3 years she still wouldn’t kick him out. To add they never liked each other, fought verbally constantly, and he told her to pack his stuff multiple times so he could pick it up and leave in which she refused!

Flash forward to currently me and my fiance got to live in the house anyway and his sister moved in just recently too. It is a CONSTANT battle about her daughter asking for stuff and being told no, for instance today she asked for a Yoo-hoo and was told no 8 times by me personally as they were mine and hard to find in my area. This child waited for Oma to come over my fiancés mom and everyone to be in the kitchen and ask again for a Yoo-hoo and I got guilt tripped into feeling like an a**hole and they continue to do so. To add I’ve only had one out of this 12 pack with only 6 left.

Let alone this is not an isolated incident it happens with food, drinks, my dogs food, and even my dogs toys and bed!

This entire situation is upsetting like to begin with my sil has taken over the entire house I can’t even put a book shelf in the living room! She took the master bedroom for herself, obviously the larger bedroom for her daughter, and has taken over the entire living room and kitchen. My furniture is even a battle to get like my fiance has a whole bedroom set (a bed frame, night stand, with a tall dresser, and a longer dresser with a mirror) she took both dressers! which I can’t fit much in the tiny room we got so I didn’t care about one but she took both without either of our permission! My dogs are rarely even allowed to come out and it’s sad because hers get to free roam and ruin my dog’s stuff. My cats are even forced to be crammed in my tiny room with us.

I will say I’m partial because growing up I could never have anything to myself either I always had to share it and got the short straw or it was taken away from me because “other people need it more” but I don’t think I can live like this and I isolate and reflect and just feel like a complete a**hole so AITAH?

ETA: I am diagnosed with bipolar disorder and I’ve managed to keep it under control until I started with this situation and I’m honestly terrified to go back to not having control