So my “roommate” is technically my step sister, my mom and I moved in with her and her dad about a year and a half ago. I am 19F, and she is 17F. When we first moved in, I deep cleaned the bathroom we share because it was HORRIBLE. Mountains of clothes lining the walls, random trash all over the floor (including USED piercing needles). She also never cleans her room or washes her bedding, never washes her dishes after cooking which creates more work for either me, my mom, or her dad, and hides dirty dishes in her room when she doesn’t feel like bringing them out and cleaning them. Oh, and she also stole $100 from my drawer once while I wasn’t home. Denied it when questioned about it, but we know it was her for many reasons. One of them being she once stole $500 from her dad’s room and he said himself she would definitely steal from me too. He replaced the money she took, but then a few days later, my little sister and I were counting the money in her piggy bank and I found a $100 bill (like the one that went missing from my drawer…). I asked my mom if she put that in there and she said no but she bets my step sister did.
Now to get on to the current problem. We still are sharing a bathroom, which I deep clean at least once a week and I really try to always keep tidy and sanitary. Every time I clean, without fail, she’s left her hair all over nearly every surface in the bathroom within like an hour. It’s on the counter, in the sink, all over the shower, on the toilet, on the floor, on my shower products, sometimes in my drawers on my stuff. She NEVER cleans it up. Now for the trash can. I always have to be the one who empties the trash, she will never ever do it. Even if it’s overflowing, she will just continue to pile more on until it’s not even in the trash can anymore because it just falls around the trash can since there’s NO ROOM. I’ll try to hold out sometimes and see if she’ll just do it eventually because she’s sick of the overflowing garbage, but NOPE. I always have to cave and do it myself because I don’t enjoy someone else’s used period products all over the floor . I have also recently discovered she uses my shower products, which I suspected because for months she hasn’t brought a new body wash or bar of soap into the shower. I confirmed it when she threw away an old unraveled loofa, and while picking it up as it didn’t even make it fully into the trash can, I distinctly smelled my body wash on it. Now I would not care about this so much if she was just occasionally borrowing some when she was out of her own, but it peeves me so so bad because she’s always asking my mom to drive her to stores so she can go in and buy stuff, and that stuff NEVER includes a new body wash??
Lastly, food. She has pretty different food preferences than I do, so there’s not usually problems in this area but there is one thing that happened a couple days ago. I bake a lot and I will sometimes get my own butter to use so I don’t use up all the extra expensive butter that my mom’s bf buys. Not that he has ever said anything if I do use some to bake but I know it is expensive so I feel bad using very large quantities at once for baked goods as he doesn’t even eat sweets. Anyway, I bought a new pack to use for my baking recently and put it in the back of the fridge. Mind you there is many sticks of the other butter in the door of the fridge. But one night instead of using that, she decides to reach to the back of the fridge, open my brand new pack of butter, and use some for her food. I questioned my mom to make sure it wasn’t her or her bf and she said it wasn’t. And I believe her because her and her bf very obviously prefer the one type of butter he gets for their food. I know this probably doesn’t seem that crazy, but on top of everything else I feel like this girl is trying to piss me off. After I discovered that, I took the box and wrote “for BAKING” all over it and shoved it to the back of the fridge again. I might sound pretty crazy for that one but I swear I’m just extremely fed up. She doesn’t have a job, and when she’s in school she’s on independent study. She rarely leaves the house, but rather sits in her room 90% of the days and nights playing video games, talking on the phone with friends, and vaping. I can’t talk too much shit on this at the moment as I am typically a heavy weed smoker, enjoy video games, and currently searching for a new job, but I take pride in still being productive around the house even when I’m out of work. I know that she struggles with her mental health and she has experienced loss somewhat recently. This makes me hesitant to say anything to her because I don’t want to be completely insensitive, but I just feel like that’s no reason she can’t clean up after herself considering she has the energy to shower, cook, pierce herself, tattoo herself, hang out with friends sometimes, play video games all day and night, talk on the phone most hours of the day, etc. Let me know if I’m not being sensitive enough about that, I just feel like she could be doing more than absolutely nothing if that makes sense.
I haven’t said anything to her about these things because I don’t know how, if I should, or if she would even care. If anything, I feel like it would just piss her off and she’d feel more inclined to make my life hell. Am I crazy? What should I do?