It's either one of the three. 1. She wants to take it slow 2. You need to chase her more 3. She has values that she doesn't want to risk Depending on the move you're attempting to pull on her affects whether she will move away or not. Holding hands is the easiest thing to do, next is kissing/making out and so on, but if you're feeling her up, try to avoid that.
One partner is more experienced than the other, and needs to step up to the less experienced person and show him/her how things are done in relationship.
One thing I find very disturbing about a lot of the questions asked here is that you guys never talk with each other !@#!@#!@#
Jesus, the first thing I would do is ask her why she's shying away,
ex: I go into kiss her and she turns away, I won't just leave it at that, I'll say, "whats wrong?" and depending on her, she might say "Nothing." or "*Giggles and pushes you away*", that's when you start suggesting things "am I taking things too fast?" "Are you not comfortable kissing me yet?" etc etc.
Just talk to her about it; should solve everything.
A lot of people in a relationship arn't confortable talking to each other on a straight though true basis.