So you're shooting for a two-ski non-race quiver.
There's no reason to complement a 76mm-wide ski with a slightly wider ski. The ideal conditions for both will be too close, and there will be too many conditions under which neither excel.
The complement to the Vision Vapors (a.k.a. AMC76) is what used to be called a wide ski, but is now more a midfat -- something in the 95-110mm width range. The only one on your list is the Miss Behaved, which is rockered to boot. That makes it much more soft-snow (not necessarily powder) biased, and that's a good thing in my book to complement an 80/20 ski like the Vapor.
I'd consider the Missbehaved, plus the Phat Luv, the Volkl Gotama (or its women's equivalent), the Scott P4, and lots of others.
For something a little stiffer (she's a racer, after all), maybe the Dynastar Exclusive Pro Rider.
For something off the beaten path and well attuned to your conditions, look at the offerings from Moment and PM Gear.