Jon can't have a mother that is younger than him, so as part of his mom's wish, the stone erased Jon from existence, along with his sister Zoe and his little brother Mikey.
Karyn finished up at the mall and headed home. She stopped as she entered the house. "Hey, sis...Mom home?" She asked of the little girl watching Blue's Clues.
"She's resting...I said I'd be good and quiet," Jane told her.
"Good," Karyn said. As she entered her room, she nearly tripped on a stone, lying in the middle of her floor. "I wish I knew what idiot left this here..."