Confront her about it man.
In my 18 years on this earth, i realized the one thing that goes through a females rubix cube-like mind structure is confrontation. Just be like, "Dude, i kind of dig you. I was wondering if you wanted to go on a date sometime".
Honestly, nothing too bad can happen. So what if she says no? just play it cool.
Go for it man, or you'll be kicking yourself when you miss your opportunity.