Mary seemed so lonely. She was the only one like herself in the world. Jess realized something needed to change, and since she thought Mary looked so cute as a cat-girl, why couldn't she join in?
She opened the box, finding two vials she had become familiar with. She swallowed all of the Age 7 vial and three quarters of the Cat vial.
In seconds, she began to feel prickles rushing up her body. Fine hairs grew from follicles across her skin. Her face lengthened into a feline muzzle as her body became completely covered in gray fur. Her hair shrank into the fur as her ears grew points. Whiskers grew from her cheeks and above her head. Her large eyes were now a bright green.
Jess' pants flopped to the floor. She was quickly losing height. Her breasts shrank inside her bra, completely disappearing. A long tail slunk out from under her large shirt. As she struggled to escape its growing folds, Jess felt her feet changing into paws. She accidentally tore holes in her shirt with her developing claws. Finally, she pulled her shirt off.
The seven-year-old cat-girl quietly snuck up behind the sofa, carefully timing her strike. In a flash, she pounced over the back of it and landed on Mary, who hissed in fright. The two girls became locked in battle, clawing at each other playfully. When they broke away, Jess turned and ran, Mary giving chase. The twenty-inch-tall kittens scrambled through the house, tearing up carpet and scratching up furniture as they continued their frantic pursuit.
Finally, they tired of playing and flopped onto the floor. Panting, her tongue hanging out of her mouth, Jess looked over at the orange cat. "I thoorrowww... thought youwrr wanted somewwrroown your own size."
Mary looked at her friend and smiled. She squirmed her way out of her skirt, which had almost fallen off during their chase. It hardly fit her anyway, since her previous shrinking spell. She walked over to Jess on all fours and laid down next to her, nuzzling her soft fur. The two catgirls purred themselves to sleep, friends once more.