Finger her pussy.

You reach one hand under Doe's butt and onto her crotch. You begin rubbing her moist slit and Doe drops her head down on to the matress.

"Oh that's nice John", escapes Doe's lips as she begins to rythmicly gyrate her hips against your hand. You squeeze her hip with your free hand and focus on rubbing her clitoris with your hand in her crotch.