Sarah turned to go to the kitchen and shrugged off her apparent sister, who rolled her eyes and went back to watching "Boys in a Yard."
Sarah gave the most teenagy grunt of indignation she had ever given in her life as she swiped through her phone. Of course Jon's number was in her contacts now. Jon was BFFs with her mom, apparently, so it would have been weird if he wasn't in her contacts.
Jon picked up after two rings. "Sarah," he said coldly.
"What did you do, Jon?" Sarah demanded. "How did you do it?"
"Whatever could you mean?" Jon's voice was saccharine personified.
"Cut the garbage. You know exactly who I found when I got home, don't you."
Sarah could hear the smile creeping into Jon's voice: "Oh, are you not an only child anymore?"
"So it was you!" Sarah was absolutely scandalized. "You are such a sicko! You gave me your own fucking sister?"
"What?" Now Jon was caught off-guard.
"Don't give me that. Your little gremlin of a sister is right here in my house sitting on my sofa and she thinks that I'm her sister. And I know you did it. You've been fucking with me all goddamn day. It ends now."
"I didn't--" Jon was momentarily at a loss for words. "All I did was wish you had a sister. I didn't wish that it was Zoe!"
"You wished for me to have a sister?"
Jon needed to backpedal. He hadn't meant to let Sarah know about the stone. "It's complicated. I'm cursed," he improvised. "I can't control it, I don't want it, but I got cursed. And part of that curse is that any time someone says something about you--"
"Yeah, I know, you get the thing. I figured that out on my own. What's the rest of the curse?"
Jon didn't want to say any more. "Listen, let's call a truce. Maybe the two of us can figure something out where we both come out ahead."
There was a pause. "I think I have an idea," Sarah's voice was tentative. "You should come back over to my house."
Jon took a pause of his own, and then agreed. He cleaned himself up, told his mom he was feeling better, and used the cherry red Mustang Mach-E in the driveway, that he apparently owned now that he was a model, to drive to Sarah's house.

 
  