(Author's note: Given how I described the keys wish, it would mess things up. Please ignore it.)
Jo calmly reached on to a desk, picked up a looseleaf folder... and threw it at the ex-ghost Jen Hutchinson. "I heard that," said Jo. "You were mumbling something. A spell?"
"If it was a spell," said Jen Hutchinson, "and I'm not saying it is, it obviously didn't do much. Anyway, I should be going. Now that you made me alive again it would make perfect sense for me to leave for my house."
"Of course it would..." said Jo.
"Wait!" yelled Jen. "She's trying to trick you. That's what she does, it's what she casts when she doesn't have enough power to cast anything else. She warps our perceptions. It's a really bad idea to let her go and do who knows what."
"What? Oh, you're right," replied Jo. "We can't let her go around casting spells. I wish that Jen Hutchinson was a painting of herself until we decided what to do with her."
The witch vanished, to be replaced by a framed oil painting a foot and a half in height, depicting her face and soulders and signed with an unfamiliar artist's name and a date of 1947. The painting was covered in dust, as if it had been found in a house after lying there for decades--which in the new reality it had.
Jo stepped over to the picture about to pick it up. But she had to let Jo pick it up. No, wait, she was Jo, right? No, that's wrong, she's Jen. She remembered going to the haunted house with Jo. But that wasn't right. She went to the haunted house with Jen, But how could that be when she was Jen? Jen was her sister, but no, Jo was her sister and she was Jen.
It would have been even harder to come to her senses if it wasn't for the fact that Jo and Jen had been created with very similar histories and likes and dislikes anyway, so there weren't any problems with Jo hating carrots and Jen liking them, or Jen doing poorly in a class where Jo did well. They were so identical that having the memories of both twins was easier to get used to than it might have been.
"What's going on, Jen?" asked the girl. She looked around for Jen, who was absent, because she realized that she was Jen. Of course, she thought--and while she had the memories of both Jo and Jen she was one person at the moment, so it wasn't as if there were two girls in her head thinking different things. The stone changes reality. With no witch, the witch never transformed anyone. Jo/Jen was still female because of the room wish, but everything else was gone. Everyone should be back to normal, and would remember meeting at an old house, that wasn't as haunted as the rumors said, where they found an old painting and then were driven home by Jack.
So Karyn and Sarah were separate people. Jack was a guy. Jo was one person, although Jo and Jen had heard the wish, so she kept the memories of two people. But it wasn't permanent--bringing back the witch once they figured out what to do with her would change reality so they had all been transformed once again. In a way, that made it worse, because now handling the witch would transform people again and they hadn't even figured out if they wanted to transform anyone even once more. On the other hand, Jo could just put the painting in the attic and go about living her life with the memories of two girls....
