It's amazing how people who "don't like dark lagers" and craft beer start to change that opinion when they start home brewing. Education is a wonderful thing.
Unfortunately we live in a white bread and American cheese society. But these are all learned tastes. The good news is, you can learn how to appreciate flavor. Just gotta step out if the box a bit.
I always ask those who don't drink a particular style if, as a kid, they only bought one kind of candy at the candy store or only chose one type on Halloween. Put in that perspective, they usually will try something new...but it needs to be close to what they are used to having. Then you have to move their comfort zone little by little. The same may be for the OP. Listen to Major, OP, and give some new stuff a try after you make a couple batches in your comfort zone for your gal.