My Sister

I am really worried about my sister. She is 17. She got married to this guy named Mark. Mark won't get a job and we found out he hits her. I really don't like him. Well the last few weeks my sis has been calling and saying she was leaving him and she would come over and stay the night then be back with him the next day. Well this last time when she went back to him she called my mom and told her that she didn't need her help anymore for like getting to work and stuff.

Now last night she got in a wreck. They were riding with some guy and hit a tree and she broke her wrist.

So i am really worried about her. I don't know what to do to help her or what.