Don't ask her, you'll appear conceited and rude and even if she does like you, she'll be too taken aback with your question that she'll most likely deny it. What you can do is ask a friend of yours to ask her if she likes you. Or just get to know her and maybe she'll tell you herself.
there are many hints that show she might like you but the only certain way is the way pinkbow described^^ lol. I'm a guy but I'm pretty sure that girl would like a guy who has the guts to reveal his feelings or to just ask directly. I you have nothing to lose if you ask
I wouldn't like it if a guy came up to me and asked (I really don't care if ANYONE dislikes this), It makes me feel like I'm under pressure. you could flirt with her and become friends first, and also be friends with her friends so you can ask them if she likes you.