"I wish I couldn't hear your voice!"
Suddenly, Jon couldn't hear his sister. He saw her lips moving, as if she were talking, but he couldn't hear her. He hadn't gone deaf, though, because he could still hear Zoe's metal music coming from her room.
"What the hell? How come I can't hear her?" the voice in Zoe's head asked.
Zoe was talking again, but Jon still couldn't hear her. She seemed really mad about something, but it should have been Jon that was mad. Or at least confused.
"Having selective deafness like this could have only been caused by the stone. Did someone make a wish with it?" Jon's voice asked.
"What stone?" Zoe mouthed.
Jon's eyes went wide. "How does she know about the stone? I didn't say anything about it," his voice said in Zoe's mind.
Then Jon said "I wish ..."