Sick and Tired [Candle]

so as i've said before. my sister has a temper issue. so, the other day my mom took her to the psychiatrist, now she believes our whole family has a "respect" problem. Andrew attempts to convince my mom is 80% my sister. but he doesn't seem to budge. so today, my mom was in a good mood. then once andrew left, i went on her cpu quick to scan something, bc i don't have the scanner drive hoooked into my cpu yet, shes on the phone and decides to march in a INSTANTLY yell at my for being on her computer THEN she realizes i was scanning somehting. before she even asked. then she makes excuses like "you should've asked" meanwhile my sister is on my laptop ALLL THE TIME and she has her own cpu! my cpu was broken and i had nothing and i wasn't even aloud on my moms. its rediculous, my sister doesn't ask, she just goes on! when she has friends over, my sister goes on her cpu and her friend uses my mom. AND MY SISTER GETS NOTHING FOR IT. i understand i should've asked, and i understand why she yells at me for things i do, but she doesn't understand that point. she yells at me for things but jackie&laura get away with murder. then when i try and explain that she says, "im not talking about them right now im talking baout you" ONE! your not talking your YELLINGGGG TWO! you'll never talk about it, bc in ur mind you try and play it off like its not true. but it is.
i can't live here anymore. i need to get out.
she was on the phone with her friend saying how i was being rediculous bc my mom gave jackie money to go see a play today where as when i go to the movies or out to dinner or anything, the money comes out of my own pocket. she uses the excuse"
i just bought you clothes" thats stupid. i had no clothes. most teens exagerate when they say that but i was literal. i had a 8 shirts and no bottoms or anything. would she like me to go to school naked? anyways, i gave her crap about giving jackie money bc ONE jackie is fricken 17 shes deff old enough to get a job, and jackie doens't even drive. my mother babies her and gives her everything at her request. my mom understands none of that. laura's the queen. jackies the baby. and im supposedly the troublemaker.
i can't handle it anymore. ive cried about everynight this past while bc of all this.