Replace her Geritol with roofies!
Okay, sounds like you belong to the club (of which I'm a proud member) that enjoys giving as much, if not more, than receiving. The problem is you think you know what is best. Despite what you may believe, you don't have a magic tongue. If she doesn't want it then there's nothing you can do down there to change her mind.
Concentrate on what does turn her on.
