She is desirable in her beauty, passivity, and victimization. She is desirable because she is beautiful, passive, and victimized.
Her other persona, the evil mother, is repulsive in her cruelty. She is repulsive and she must be destroyed. She is the female protagonist, the nonmale source of power which must be defeated, obliterated, before male power can fully flower. She is repulsive because she is evil. She is evil because she acts.