Hairdog, That is elementary, my friend. I would respond by telling her that I am not buying into the notion that I am here for men's pleasure--it is MY pleasure I am seeking.
And it is! She is most likely the type of person who sees easily and quickly through bullsh*t and she will know within minutes of the discussion that I don't pander to my man or put his needs above my own. Sex is as much about my own pleasure (and seeking it out and placing a demand on HIM, something that is prolly right up her alley) as his. It has been that way throughout all of my sexual relationships. I don't ever remember having a relationship with someone where the sexual part felt all about "them" and was something that I was doing out of obligation. What a weird and foreign thought that would be to me!
So that would be my response to her. That the truly unenlightened woman is the one who rejects her own sexuality, simply to punish men for the sins of their fathers.