After exchanging a few messages on facebook, I decide I want to see this girl so I send her this after a few days of inactivity (she's been at university and got back around the time she initiated contact):
"Hey, am out tonight if you're back in town. If not, let me know when you're back we'll meet up. P.S. You're never on facebook chat, you suck

"
She replies within a day apologising for not been on facebook chat, and saying that she is back but "doesn't have ID with [her]" so "won't be out any time soon...". I'm in the UK and she's 21 so not sure if I believe that - don't know if she's making an excuse, or shit testing me.
Opinions on how to respond to this?
I think she's quite popular - there are like 3 posts on her wall in the past week from guys asking her for drink.