Does she just want sex or does she want me?

She can't make up her mind wither she wants to be with you or not. Maybe she has trust issues from past relationships and possibly thinks that if you two hook up, then you might cheat on her or break her heart. Or maybe she's done this sort of thing before and usually ends up breaking the guy's heart and dosent want to do that with you. Its common in a lot of woman, talk to her about it with her sometime. See if she wants to be with you but is scared to do so. If she is, assure her that you are not going to break her heart or cheat on her. Give her some time to make up her mind, just pe patient and dont be pushy... at all. Give her what she wants for now. Best of luck(: