True, her people had been human, were born in human shape, but they had become so much more.

Hmm, this is such an interesting concept, because we don't really get explanations for the deepest mysteries of the Riddle-Master world, the way magic works exactly, the limits of power, per say. It's one of the things I like about it, but I also like this particular concept where Earthmasters were human once, whatever human meant for them.