I would also second the Arbor Cadence. It's a great board and it's rather light weight. Grip Tech for Arbor is kind of a milder Magnetraction I suppose.
I have an NS Infinity, not a Pandora, but I can say that NS boards are pretty awesome as well. NS boards are a bit on the heavy side, but if your wife is ok with that, it rides awesome, is damp and really durable.
My main complaint about GNU/Roxy/Mervin boards are that the metal edges don't cover the tips, so the tips can get scuffed up over time. But otherwise, the Roxy Ollie-Pop, and GNU's women's twin boards are probably good for the east coast.
Smokin licenses magnetraction from Mervin, and they make what seems like great snowboards, but I've never ridden any.