What the Ugly Stepsister prizes above all is dominion over everything. She doesn't share because she thinks there is barely enough for her- in fact, there is never enough. Other people's joy is their betrayal. If thwarted, she will seek revenge, and her poisons will taint you. Her most insidious trait is that she is not entirely ugly: one side of her face, although sad, is also sweet, like the shine on a poison apple. But remember - in fairy tales, the Ugly Stepsister does not always find redemption.