Stage a daring daylight bank robbery, she sounds like she should be the wheel girl so balaclavas all round chicks love excitement and tearing down the free way at 120 while bullets scream past the window sounds exciting to me. Have a fast car? Of course you do you have a third date! As long as the police dont find you hiding in an abandoned shed in the woods its all ok, hey you even have time to swing back to her place by 5pm and enjoy some coffee.
Have dinner with her and your parents/grandparents/family or all 3. Chicks love being outnumbered and surrounded by complete strangers who are related to you. If possible pay a hobo to be your uncle, then have him start an oil fire, chicks love practical jokes. Have at least 3 of your family storm of in a rage when she admits to hvaing an opinion about anything chikcs love a bit of opposition in anything..
Seriously though do something romantic that can wind down into romance and Warm "COFFEE" OR have a crazy night, that winds up into romance and er "coffee". The extremes are best. You will proberly know her well enough to know which of these she will like the most (the last two, the first to are obviously better as first dates)
Also cook girls love a guy that can cook (dispite what my male friends might say)