Suffering siblings abuse

Is there somebody who can help me. I am really going through a hard phase both financially and emotionally My sister has made my life a living hell She always fights with me and God forbid if i say something in my defense she makes a big issue out of it. Slandering my character has become her favourite hobby and not to mention the physical abuse she does with me. Few months back she slapped me on my face and kicked me in the belly. I cannot forget that trauma to this day. Plz help me i am so scared adn after all this she stops talking with me as if i have done something wrong with her. For sometime i think it's good she stopped talking because i want to maintain a distance for now because wallahi right from childhood she has made my life miserable. Not only she fights with me she fights with our parents and other siblings also and I don't know why she becomes so violent and starts hitting even parents Please help me😭