Seeing her in the full nude Erika yells her sister's name "Lilly!" As her sister turns covering her breasts its too late, she's sprayed and her crotch is already regressing.
Lilly ran to the toilet feeling the strange sensation in her lower body. On the toilet seat she already noticed her crotch looks younger then her. And by the time she got to the mirror to examine her body her genitals are gone.
She looked at herself on the toilet. It really was gone wasn't it. And whatever that nasty brat did to her was most likely permanent. She thought of how horrible her life would be from then on, no more sex, at least not the conventional way. Who knows if she could even get off on her own.
She felt the blank skin where her lovely vagina once was, it was so weird for it not to be there. The dull pleasureless sensation was so consumingly strange given that the area had once been so pleasurable. It was like the feeling of loosing a tooth, but tenfold, it was so strange for it not to be there the fascination almost distracted her from the horror. Tears filled her eyes, wanting to go back to before this day.