Should i run away????

MY cousin nd her 2brother and 2 sister and baby and her mom is sleeping in my house for 2month this whole summer..=[ and i live with my bro nd sis and my mom so there total 11 people livin in a 2msmall room apartment and 1bathroom. my cousin is a ***** we got into an aurgument cuz a boy called my house and now she fighting everyday . i wanna move out so bad!! am only 16 but my mom wount let me. i told my mom it either her or me. i told my mom she going to loose me cuz now am becoming really moody nd depressed.my cousin nd her mom got kicked out of der house b.c dey was living with this men nd my aunt is a slut so she ****** another guy nd got kicked out. am not surprise nd am happy it happen to her for being such a ***** only wanting gold digg. i spent my whole school year working my *** off to p all my cles so i can have a great summer but now that not happing.. please tell me what to do? i dnt have a father nd my mom is strick nd wount let me stay with any aunt. my cousin is hitting me nd der bro nd sis r piggggg dey do w/e thy want nd this house isnt there wtf!!