Well it's a little too late now. That class was at 9:00 so she's in a different class by now. I'll probably see her again in the open computer lab later on, I usually do. I can only cross my fingers and hope for the best. She's probably already with someone though, I seriously doubt that she's single. Can't hurt to try though.
Good luck! And you'd be surprised at how many pretty girls are single because guys assume they aren't and never ask them out!