A girl who cannot be a princess has no choice but to become a witch; a girl who was once a princess, married off to a loveless unhappy ending, has fewer choices still. The voice on the other side of the glass bids Goneril go deeper, and she must, for there is no path forward for her.

She has no choice, if she is to make Edmund her prince — no choice, but to seize his sword and make it hers and hers alone, hers in the ranks of death — and with it, revolutionize the world.