Re: Gunnerkrigg Court 3: Mystery Solved!
At this point the theory that she is an earth elemental seems to still be a possibility. The fact that she broke the stone does not disprove it, because some stones are harder than others. The fact that her earliest memory is being in molten rock seems to support being an earth elemental. Whether this is the right explanation or not, I do think that there will be an explanation at some future time in the story.