Is my female friend flirting with me? GENUINE question, thanks!?

It sounds like she is coming onto you, and to be honest, if I were you, tell her straight, that you are not interested in her, I have had the same happen to me, and like you, I thought I was going mad, but some of my other friends was commenting on her looks, what she said, and that was enough or me, I put it the best way I could, and told her, over a coffee, "I'm sorry if this hurts your feelings, but I like you as a close friend, but I don't like it when you come onto me, I like men only", her face was gutted, but deep down, I knew that I had done the right thing, and funny though, as from that day, I never saw her again. You should say something to her though, hope all goes well.