T Ryan, I agree. If she flakes out you will get to know that she is not interested. You do not have to take her out for dinner or wake up and wonder where the peppermint on the pillow went.
Speaking of flaky: When I was a teen in the 1970's a gentleman asked a young lady out. He splurged for a limo, expensive dinner reservation, a tux and flowers. When she cancelled at the last minute he actually sued her in a court in San Fransisco AND WON!
I would have given anything if he had asked me out by the way.