Okay, this is a little long. Im 15, living w my sis whos in uni in a rental house due to bad family circumstances. We rented out a room on the second floor, sharing. We have a housemate who lives on the first floor, who is always fighting us in small ways, but wont ever face my sister, only lecturingly complaining to me and then quickly running off before i can respond. We acc thought she was really friendly, just a bit snarky and insecure about how late she wakes up, or that me and my sis eat 'a lot!!!' (just 3 meals a day).Out of nowhere she wrote a huge rant in the group chat i wasnt in about a bunch of issues (water bill, left lights on twice, 'conquering the downstairs area', we used empty corners cause she did too. Hella spacious living room). This time it got too bad though. Today she quickly told me as i was coming in that, to quote her again, 'this is a houseee (x3 repeat) you should put your stuff in oneee space okay. Thats all." and she ran off. She acc repeated it twice cause the first time she had her back to me, dropping her things fumbling to spit out a remark and run, but i didnt hear her so she repeat without even making eye contact. Later on the landlord texted us four pictures, a tiny neat rack in a corner no one uses, our food storage against a wall that was empty, another of our stuff neatly in boxes, and three bags on a couch that she also put a bunch of large boxes on too. But the boxes werent there. She removed them that very day, and will prob put them back after (tho im snapping pics if she does for protection). Ive got a history of a bad home environment, dealing with insane and disordered siblings and toxic parents, and crippling social anxiety only hidden by my race being different than most others in my country. This was a whole trigger. And my fear of confrontation and her hurting me, or the landlord holding back our deposit we need to move next month, (thus forcing us to ask our dad, whos straight up evil, for money) is killing me. I keep wanting to vomit to release the tension in my chest. There were a bunch of other deets that i didnt mention, too long. Please recommend some coping methods! I'll be out of there in a month.