I Hate My Sister

My sister abuses my boyfriend and I, and there's nothing I can do. EX: Last night, I was cuddling with my boyfriend and my sister literally came into my room with a baseball bat and she started hitting mine and my boyfriends legs... [b]hard.[/b] Then, my boyfriend grabbed her wrist and moved her away from me. My sister then ran into the next room and started crying to my parents that he hurt her. I hate her so much, and my parents don't do anything about it.