"I wish that Jane is here."
Jane suddenly appeared. She didn't even notice that she had left and was preparing to leave again just as she had a moment ago, not having remembered that she had already left.
"Hold on, K... Jane," said the new Karyn.
"I wish that we're teenagers and in our correct bodies."
The new Karyn hadn't thought it through, but there was a way for that wish to work. No wish had ever demanded that Jane and Karyn be eight years old. The requirement was that they be smaller than Mikey, and the same age as each other. No wish had demanded that they be swapped, either--it was a side effect that could have happened either way.
So Jon suddenly found himself back in his own body and teenage--except that Mikey had made it female when Karyn was in it, and it was still female. He was Jane.
Karyn was in her own body and teenage, holding the stone.
And Mikey had suddenly become teenage as well. After all, the wish was that Jon/Karyn be smaller than him. She was still smaller than him... because he was now a teenage guy, and teenage girls are generally smaller than teenage guys.
"What did it do to me?" said Mikey. "What happened?"
"I..." Jon was now in his own body (as Jane). The wish that he act like a girl version of Jon specified his body, so it wasn't in effect. But the wish that he be in love with Mikey still existed. It felt contrary to all his memories, but as Jane, he gave Mikey a sudden kiss....
