Darn, you made a decision before I got to chime in...I had to hold myself back from posting yesterday.
I'm pretty sure it was the "wifey-poo" in the title that got the blood boiling in more than a few of us. Then making it sound like she couldn't figure this out herself, and you didn't want to spend money on good equipment for her. Well, I guess that sent some of us over the edge.
But, since you say she doesn't care to demo (are you sure? maybe you could tell her all the ladies here say she should demo because she'll really notice a difference), I agree that she'll probably like the K2. Let's just say that at her size, she's not likely to HATE them. Then, maybe while you're out West on your trip, you'll be dumped on with snow and you'll be able to get her to try some fat skis...which will introduce her to the wonder of demoing and the joys of powder skiing (she'll feel like she's dancing with the mountain).
And, maybe her skills will improve dramatically with those K2s and she'll bump up into a higher skill level and she'll suddenly want to try...and buy...all kinds of skis!
Really, it's just that we as women HATE to see other women not enjoy skiing. We want them to have the equipment that's just right for them, we want to see smiles on their faces (even when it's frigid and less-than-perfect ski conditions), we want them to dream of becoming a ski bum when they grow up, and we want YOU to have a partner who loves skiing as much as you do!
There are, of course, a few men here who feel the same way, which is very validating, thank you very much.