If she's making you uncomfortable, it's time to make her uncomfortable.
HT suggested the nice way to make her sick of herself. Me?
I'd descend into the debauched deapths of hedonism and depravity the likes of which the internet will struggle to contain.
Animals? Tentacles? Bondage? Chauvanism, hedonism, designer drugs, children, third-world brides, costume play, defecation, and a hamster with a ball gag.
And then, when she inevitably says no, you can seize upon the opportunity to say that you were having fun, that it was hilarious, and that she's being a buzzkill.
Then you'll have the support of the masses!
(Machiavelli's lessons for dismantling a game...)