Ah, the art of the Mormon girl. I'm from Utah. I've played this game.
First off, in my experience these girls are very sheltered and repressed. Because of this, if you place an open minded, more sexually liberal individual into a position of influence they tend to rebel against the morals that have been pushed upon them their whole lives. They "crack easily", if you will, and when they do they go all out. Some of my kinkiest, freakiest experiences have been with repressed Mormon girls that told me no sex until marriage.
.....But, evidently, this is not what you want. You want to keep to her conservative morals. In that case, you need to be very creative. Remember that scene in 40 days and 40 nights (I believe that's the proper title of that movie.) where they used that flower or feather or whatever it was, and he gave her an orgasm without ever putting his cock, or anything else, near her vagina? That kind of creative.
Or you could marry her......
Best of luck to you fellow Mormon chaser.