Meeting new people in college on a regular basis is pretty hard if you don't put effort in it. It's all chance really who you meet and whether or not they're available.

I don't think it's about reading signs. Either you see them or you don't and you end up with a vibe. Because you don't know right now, you probably didn't get a vibe that she liked you. This however doesn't mean she isn't flirting with you. I think it's kinda hard from just one 'date' to really tell.

Anyways, I think you should ask to meet up again. Give her a call or something. You're in college so a guy going out with a girl like that isn't really considered dating until you two start holding hands or something. If you make an effort to meet up with her another few more times you can probably figure out if she's interested in you or not and you two can be good friends either way.