There is a video on Waldorf schools that you can rent through netflix. It was 45 minutes long or so and it explains everything except the Rudolph Steiner philosophy. It makes a difference how into the Steiner stuff the school is because it is almost like a religion, so if they are serious, you'll want to be sure you're comfortable with that.

Does your daughter like touchy-feely stuff (massage, spirituality) in addition to liking art? (It sounds like a good fit so far, though.)