Cold Shoulder

If her last-minute resistance suddenly seems impossible to overcome, go cold:

Turn on the lights, blow out the candles, check your email, go to the kitchen and make a sandwich, or pull out a chess set and ask her to play.

The power of this move lies in how sincerely you play it. If you start sulking or acting irritated, she'll see that it got under your skin. Just act as if all your heat has vanished into thin air. She'll feel that loss and may let herself lower the upper threshold of her LMR.