Don't contact her in anyway while she is out of town. Chances are good that will just push her away even more.
I'd forget about her for a few weeks, and move on to some other babe for a while. After a while text her with something like...
Quote:
Hey, you were supposed to bring me back a double bacon burger when you got back in town. What happened???
Not the best text, but I don't know any details relevant to your situation with her. For example, if she was going to Australia, text saying she was supposed to bring you back a Koala Bear, or something.
You'll pretty much be able to gauge her interest in you right off the bat from her response. If she plays along things might be all right. I'll be honest though, it seems like your getting the cold-shoulder for one reason or another. But still, not time to give up yet. But if you're needy/clingy it's gonna halt any chance you've got, more than likely.