Can Sarah resist her mother?

Sarah wasn't sure she heard correctly, she never would have expected a question like that. Sarah understood her own arousal was caused by her "Growth X" spiked body and her cock having a mind of it's own, but she clearly could see the signs of arousal in her mother as well, the look in her eyes, her flushed face, and did not understand where that was coming from or what caused it. It was as if her own arousal got transferred to her mother.

Sarah: "What?!? Uh, no?"

Monica herself didn't understand either what was up with her, or where the words which left her mouth were coming from. Her nipples had become quite hard, and she could feel a clear heat and wetness between her legs, a tingling in her pussy. She was turned on like never before, turned on by her beautiful daughter, who smelled so good and intoxicating. Her daughter, with only a bathrobe blocking the full view to her big and beautiful breasts. How she would like to see them again, or even to touch them, to feel them, to knead them and make them jiggle again, to suckle on them. Everything else did not seem to matter.

Monica: "Please, Sarah, let me see them? Just once more?"

Sarah gasped. It seemed like all rational thoughts had left her mother. And she didn't know if she herself was willing to go where this situation seemed to be leading. Some parts of her wanted to just drop her bathrobe and show her mother what she had become: A busty futanari with a huge cock. To make her mother fall to her knees and worship her body. But the more rational part of her reminded herself, that there were some boundaries which were not meant to be crossed, weren't there? Like don't stick your big fuckstick into your own mother? But did rational thoughts even count anymore? Did the rules of ordinary people and society even apply to her anymore, when she had become so extraordinary?

Monica: "Or maybe i can touch them?"

Sarah took another look down at her cock, and it had clearly risen by now. It lurked out even more, not only its head, but part of its shaft as well, and quite a few more drops of precum had fallen and gathered on the ground. Sarah looked back up at her mother, and saw that by now she was biting her lips, seemingly in trance, waiting for the approval of her daughter to break this taboo between them. And she knew that if she didn't put an end to this situation quickly, there would be no turning back, not ever.