"I wish that Wendi is Karyn's twelve year old younger sister, and she remembers only the new reality until I change that."
Wendi suddenly became younger, her features more like Karyn's.
"How long is this going to take?" asked Wendi. "You wanted to stop by and say 'hi' to Jon, we can go now."
"I'll get you for this," said Karyn. "I have a sister now. I bet she has her own room, Mom remembers her, and everything!"
"Yeah, but think about it," said Jon. "Wendi grants wishes. And she's going with you. I'm giving you the chance to make wishes. Besides, if you don't like it, you can unwish it."
"Hmm," said Karyn. "I see your point."
"You're weird," said Wendi. "Both of you."