TabulaRasa
Buffy Girl
I haven't read the comics, so my knowledge is a little limited, but throughout the show Faith gave the impression that she has never had any meaningful relationship. My point being is that I don't think she would turn down using her feminine ways to get information out of a guy. The fact that she won't do this to a woman kind of suggests that she doesn't like them the same way she likes men.
Or maybe a realationship with a woman would be more important, sacred to her. Maybe that's why she wont do it that way.
Reaching? Maybe, but I like it.