There's always the chance that she's choosing these new beers because she thinks that she likes them...when in reality she's just mildly interested in them either because you have an interest in beer, or because she isn't experienced in what beers she really likes. When this is the case, you could give her the exact same beer in a few months and she will have a completely different impression. It's not a female thing, it's just the way some people are when they first drink craft beer. They don't really know what they like or why they like it...it just tastes new and different, so they get the impression that it's good. If she keeps drinking quality beer with you, she might realize that she actually does like lighter beers like a cream ale or Kolsch...or she might realize she's a barleywine lover. At this point I find that it's usually a waste to brew a 5 gallon batch for a person who is just dipping their toes in. Additionally, there's the chance that she has a "beer-infatuation" because of you...and there is a chance that this will pass. In either case if you make something, you had better be prepared to drink it yourself if she doesn't want it!