Play it cool, just back off for a bit. She obviously knows you have the hots for her, it's up to her to make the next move - can't tell if she's playing hard to get or is actually genuinely not interested but if you withdraw your attention you will find out because if she's into you she will wonder why you are no longer showing any signs of interest and so will start making conscious efforts to try and engage you.
[SIGPIC][/SIGPIC]
Love is like a merry-go-round: you get all dizzy, and then you feel sick!