Sarah retreats to her room

Monica's gazed remained lowered in shame: "Ah, sure. I'll get the card out of my purse and put in on the kitchen table. I just need a few seconds to gather myself."

Sarah thought it was best to leave her mother alone now, to put some distance between them and to give them both a chance to calm down and come to grips with what had just happened. "Thanks mom, you're the best. I'll be up in my room to get dressed."

Only a few moments later, Sarah was back in her room, deep in thought, pondering on what had just transpired:
She had come so close to just whip out her cock and let her mother have her way with her. When she had been aroused, it had been so difficult to think or to control herself. She still didn't understand how she had been able to stop herself then so suddenly. Not becoming a out of control big cocked freak-show in public at every opportunity would surely come in handy... she had to think more about that later and figure it out.
Then there was the matter of her mother, her state of arousal and condition of losing all reason. There had to be a logical explanation, something to do with her "Growth X" enhanced body. Sarah checked herself in the mirror again. The only obvious change that her mother could have seen was her cleavage. Either her boobs had become hypnotizing orbs, or it had to be something else unrelated, something not visible to the eye. Her mom had started to behave weird when they had hugged. Then her mom inquired about "her new scent", the scent of her cum, only to lose it again when her cock had started to leak precum. Of course! It was so obvious when she thought about it. It had to be her cum!

Sarah went to her desk to pick up the package slip of the "Growth X" pills and skimmed over it again.

• "Taking more than one can in some cases cause the patient's libido and stamina to permanently increase."

Check. She was definitely able to churn out gallons of cum and go again quite soon, as witnessed in the shower.

• It also warned of "a loss of morals" in some cases.

Also check. She had been so close to just take her mother then and there in the kitchen.

• And the last thing was "loss of self-control in some tester".

Again check. There could be no denying that she was affected by all these conditions. 'Some cases' and 'some testers' my ass!
And what was up with the scent of her cum, which had caused her mother to lose it? Not mentioned with a single word at all.

Sarah sighed. She was in emotional distress about the whole situation. Sure, she had wanted to become a big cocked dickgirl, and have her way with whomever she pleased. But she also wanted to remain in control and not lose it randomly. The way she had been able to calm down in the kitchen gave her some hope at least.