Deppression

Im 13, and my family is the definition of dysfunctional. My dad is a sociopath, my sister doesn't care about me, and my mother is violent along with my dad, and no relatives can help... My mom hits herself, and has temper issues. She doesn't believe anything is wrong with her, even though she is happy and then extremely angry the next second, always showing her anger on me. She's just so mean to me. And brings me down all the time... I told my mom about my depression before and she laughed in my face. I dont think she understands what depression is. I told her I wanted to kill myself and she just walked away. It's getting harder and harder to keep up my grades. I can't see a counselor without my parents knowing, and if they know they will be really mad. They dont even care about my opinion ever, and my mom called me her property. I don't understand.... I'm just sick of feeling sad, but they always bring me down no matter what. MY mom also said that since eshe is my mother she can hit me all she wants. And no the police dont care at all. I thought about running away, but thats not easy, im 13 female, its unrealistic. And when i tell her to stop touching me in a wayI dont like, she feels really heartbroken for n reason and always misunderstands me. I try to explain what I mean but she never listens. And my family argues a lot. When they yell I feel liek ripping my ears off. I don't know what to do anymore