It's really quite hard to say, I don't know what type of girl she is, you should just try being honest with her, don't pull any moves or such... Just be straight froward, tell her you like her and you want to be more then friends.
If she likes you in that way and your friends it really doesn't matter how or what you say, if she wants to be with you, she will be happy to know that you do too.
How old are you??
Does she like you as more then a friend?