Then there was Jon's next two wishes... "I wish that anyone who calls Meg a name would turn into whatever they called her". The stone tried to sort out what the reverse of that was. It simply decided to reverse the wish back on the caster. If he called himself something he would become it. The next wish had been for Karyn to be able to talk. Karyn was suddenly struck dum.
Jon had wished for Ms Ogletree to go away. She was suddenly back again. John had wished to swap bodies with Karyn. The reverse of this was that they not swap bodies. Jon suddenly found himself in Karyn's body, holding two rocks, one of which was Karyn. This change being permanent became the change being temporary, but as there was no change the time measure was a moot point.
Ms Ogletree became a very dangerous and abnormal person. She had a very large head with long bucked teethe. Her eyes were crossed. One leg was shorter than the other. She had a hump on her back. And she held a magical stone.
Then Karyn's last wish hit itself. That all her wishes be reversed. Everything started to change back again. And back again. And again. Karyn / Jon felt the stone getting hotter.
"I wish I had not made that last wish," Karyn said. The magic eploded outwards. Jon found himself in Karyn's body with small breasts and short dark hair. Ms Ogletree found herself as a normal person again, young and beautiful, holding the unmagical rock. Karyn was stuck as the magic stone.
"I wish that it was that witch in this stone and Karyn was free."