Jon shifted in his sleep, dreaming of lazy days on the beach, before school started. As he slept the changes started. His entire body shrank a little, and took on a decidedly feminine shape. His chest expanded into two perfectly formed, modest-sized breasts, and he rolled over onto his back to alleviate the discomfort of sleeping on them. Down below, his groin rapidly changed, and in a few seconds he was medically female. Her limbs grew slenderer, and her face softened into that of a teenage girl. Her hair changed to orange and grew very long; if it were hanging straight it would have reached down almost to her waist. She was now indistingushable from any other girl her age.
Then a second wave of changes started. Her ears, like Karyn's had, grew thin and triangular, and were soon poking out from the hair on top of her head, covered in orange tabby fur. Then came the claws, and lastly the tail, covered in the same fur as her ears.
Jon shifted again and murmured, dreaming happily of the first fish she ever caught. She'd used a rod and a rubber worm then, but she thought that next time she went fishing she'd try just catching them with her claws.