Katheryn handed the stone back to Jon, and said to Sarah "Dad, I think we should start getting furniture. I'd really like my room at your mansion to look good."
"Mansion? I don't have a mansion," Sarah said.
"Not yet," Katheryn replied. "Jon?"
Jon held the stone and said "I wish that Sarah owned a mansion on the outskirts of town." The stone glowed, indicating that the wish was granted. "There. Now you do."
"Thanks, Jon," Katheryn said.