I guess I don't see it that way. I asked a question. She gave me an answer. Continuing to ask the question, or to ask more questions, surely wasn't going to change her mind if it was going to be changed at all.

If the shoe was on the other foot - say a girl I wasn't attracted to or was no longer attracted to asked me out, and when I explained my feelings to her she replied with "so what?" - no matter HOW she said it, whether joking or confident or annoying or cocky, my answer would be the same. Why go out with someone you KNOW you don't have feelings of attraction for, or you have had that feelings for and the feelings fizzled?