Sarah smiled after the wish had been granted, she was still in command of her body, and was no longer holding a stone pair of panties that felt just like normal panties, even though they had still kept their stone-like appearance.
She suddenly was curious as to the results of her wishing, and wanted to inspect herself, but felt that inspecting her vagina would be, well, something that wouldn't be a good idea to do in a place where just anyone could walk in on her. So... "I wish I was in my room."
Next thing she knew, she was in her room, still holding the stone, still wearing the same clothing she'd been wearing before, and still not acknowledging Jon, who was considering going stir-crazy with his inability to even TRY to get Sarah to acknowledge him. And he was so worried about Karyn, what had happened to her? Dammit, but the inside of Sarah's shirt wasn't offering any explanations whatsoever.
Sarah grinned, closing her blinds and locking her door. She then dropped her pants and took off her shirt. She then dropped her panties, and got a shock.
It was easy to see with her panties off. Everywhere where a normal pair of panties would have been touching her skin, her skin was now dull gray. That included her vagina, but also her butt and parts of her hips were all now made of stone. What's worse, when she touched them, her finger told her that her skin was made of cotton, or silk, or some other form of fabric, and even from the inside her private parts felt different from how they should have, as though the feeling were being dulled by... a pair of panties.
Sarah looked in the mirror. It was a strange thing to see, now that she was actually looking at her unimpeded skin. Wherever a normal pair of panties would be was a patch of flesh that was now made of stone and felt like panties that was confined to being inside her body. She knew that Karyn must have been freaking out at the moment, but she didn't really care, after all bodyparts didn't have much choice in what happened to them.
Her stone crotch still had its normal hair, and upon inspecting the important bits she found that, despite that she literally felt like she was wearing panties even though she wasn't, everything seemed to work like it was supposed to.
That determined, she looked at her breasts. For the most part her breasts looked like breasts, but upon close inspection she found that her flesh, both on her breasts and where one would expect a bra to touch, had almost imperceptible cloth patterns, and when she pulled on one of her breasts it bounced back to its apparent resting position, which rather than what this had been prior to today, was now much higher, as if she were wearing a bra, a sport bra specifically, even though she wasn't.
Amused by her breasts and slightly disturbed by her new cunt, Sarah considered. "I wish that I looked and felt totally normal."