I'm not a pixel-art expert, but it looks really good. Only, like you said, the skirt is a bit problematic because the left and right edges don't move. I'm curious why you can't do the same thing with the skirt that you did for the mantle and hair, because those turned out great.
The other thing, which I only noticed after a while, is that the mantle and the hair are flapping in sync with each other. Shouldn't they be slightly out of sync? Maybe adjust the mantle frames one more frame forward so they don't lockstep?
Still, this is so much better than anything I could come up with... please post more!