incest in frankenstein is not always literal but often manifests through the merging of roles--for example, caroline makes elizabeth into an extension of herself, shaping her into a replacement maternal figure who then becomes victor's bride. caroline's actions suggest a deferred form of incestuous desire (particularly when considering victor's nightmare where elizabeth turns into caroline and he kisses her)--she does not act on it herself but instead uses elizabeth as an intermediary, crafting her in her own image and ensuring she remains within the family unit as both daughter, sister and wife. in doing so, elizabeth not only fulfills the role of wife to victor but also the role of wife to alphonse, as she becomes his quote "more than daughter." given this history, victor's act of creation becomes more than just a scientific endeavor--it is, in a sense, an unconscious repetition of the generational cycle of misplaced desire. victor talks about his creature during the creation process in ways that strongly resemble euphemisms for sexual transgression (as much as people who favor the creature-as-son interpretation don’t like to acknowledge this): he describes a night of feverish anticipation, bodily toil, and an act of creation or "birth" conducted in solitude, followed by overwhelming regret and self-loathing the moment he sees what hes done. there is, too, the same blurring of boundaries between victor and the creature that is a running theme within the rest of the frankensteins: creator and created, parent and child, self and other. victor's disgust at his creature, then, is twofold: he is repulsed by its monstrous form, yes, but he is also repulsed by what it represents--his own participation in perpetuating an ongoing legacy of psuedo-incest. when the creature demands a mate, this dynamic becomes more pronounced. the creature essentially asks victor to complete the incestuous cycle by providing him with a bride, a second creature formed in the same manner, what would technically be the creature's sister; victor's destruction of the female creature suggests an almost violent reaction to his own subconscious recognition of the pattern he is repeating. it is significant then that he chooses, though without realizing it, to break this cycle of abuse by refusing to comply to a marriage between siblings like his mother did to him and elizabeth.