Beth hummed happily to herself as she explored the Chronivac's possibilities. As she had suspected, so far Jeff had only scratched the surface of what it could do. Well, he was in for a surprise, although she planned to make it a pleasant one.
"OK, Jeff, I'm ready." Jeff came back into the room, with a mixed look of fear and excitement. Beth grinned. "You're going to love it, and if you don't I'll change you right back." Jeff stood in front of the emitter, and Beth pressed the button.
Jeff felt the familiar sensation of shrinking, and a light covering of fur covering his skin. But something was different this time. He wasn't falling on all fours, and the shrinking stopped after he had lost about eight inches in height. His penis was disappearing as his genitals reformed into female ones. This she had expected, but now her chest was expanding, as small but unmistakeable breasts emerged. Her ears changed shape and migrated to the top of her head, while her face seemed to freeze somewhere between a cat's and a human's. Her fingernails reformed into a cat's retractable claws. Finally a tail emerged from the base of her spine.
"Oh" breathed Beth "You are so fine, sister." She gazed rapturously at the new catgirl.