Important to tune for this situation:
Confidence
Charisma
Pursuit
Ingenuity
Persistence
If she didn't immediately shut you down, you have more than enough of a chance to go ham.
Don't be afraid to talk to her again, remain clear, focused, mostly honest, cool, and prepared.
Don't immediately (and accidentally) friend-zone yourself if you're interested in her. Demonstrate and initiate mental- and more importantly physical attraction.