It's not even flirting. It's literally just her asking you on a first date, which is what you get..
Try saying this "I don't see it that way. In my mind it's not even flirting. I see as her asking you" That we could break the circle we're stuck in. We are going to leave this discussion with different opinions but if you saying "see it that way" you are acknowledging that you are not divination wizard who can magically discern truth from fiction.