That night out might have seemed like pursuing. You might need to give her a little more space. Work on yourself. Go to the gym, lift weights, run, get some new clothes, etc...
Also, start reading relationship books, understanding women and their needs, etc... Start noticing what you do or say that brings her closer, and what causes her to back away.
One more thing. Ask her lots of impersonal quesitons, get her to talk about her day and thoughts. And with each thing she says come up with another question. Don't have any expectations.
There is no arriving, ever. It is all a continual becoming.
