Tell her what I told people when I was single, which is that your first test of a man is whether or not he makes the first move, how he responds to flirtation, etc, and that you find the intial attraction and uncertainty to be the best part of dating.
I adopted this policy because I spent 12 years of my life with the most passive/passive-aggressive man I've ever met. He forced me to make every single decision in the marriage, down to what we had for dinner every night, but if I guessed wrong, he'd pout like a child. Yeah, no, not doing that again. I prefer my current alpha male--at least I can tell him to stop acting like a donkey's behind without him acting like I'm a "bad Mommy".
If that doesn't work, tell her you are no longer friends with the last person who tried to fix you up with someone. (This is true for me as well, and it shuts people right up.)