I need help reddit, please. Somewhat of an emergency, police, drugs, crying

I'll try to make this brief.

My mom is a drug addict. Soma + xanax. She gets "sedated" (is that the word)? doesnt understand shit, cant walk, anything. my sister is a bipolar CUNT. absolute cunt. today my mom was fucked up and my sister was being very bad, and my mom tried to call the police. I couldn't let her; they would of come here and seen the abuse, everything. so i tried to stop her. she tried to punch me, but i just took the hits and tried to keep her safe and not access to the phone. she can barely talk as well. i called my grandma, lives close, and i asked her to come, i didnt know what else to do. im onnly 15. it elevated, and she started to hit me more, and nearly my grandma, my grandma (who NEVER cries) started crying, and now i had my grnadma take her to the mental hospital where she wanted to take my sister. my sister is "going' there with my mother, who is slowly sobering. i took her pills, she hasnt noticed yet.

idk what im asking im just panicking. its not good, i cant live with this...