Oh, yeah, a teacher-skier is absolutely doable. No doubt at all. I teach, and I got thirty days in this season. I would have gotten more had I not missed a snow day or two, and bailed on two or three days over Christmas break. (Oh, and got sick and missed the EC Gathering. Bummer.)
February break? Yes, it may be crowded, but I live in New Hampshire, where vacation week the last week in February, which neatly ducks the Connecticut, Massachusetts, and New York hordes — and the hordes in Colorado, too, by the way.
Anyway, so what if it's crowded? So what if it's raining? A skier skis.
We also have April break. Here, the season's almost over, but there's usually snow in the west (big-time in Colorado this year, from the sound of it). AND we have night skiing here; I ski Friday nights, and during the day on Sunday, and still get Saturday to do what needs to be done.
Oh, she'll be fine -- after the first year. Be re-a-ll-y supportive the first year. It's going to be tough. Totally tough. Super tough, probably. But after that, more or less, she'll keep up. She might ski more than you do.