Thinking he was doing Jon a favor, his grandfather whispered to himself (so no one else could hear) "I wish that everyone, except for me, would think that Jon is a 16-year old girl named Jennifer." This way, it would be easier for Jon to live his life, without having to learn how to be a girl.
Jennifer's grandfather walked into the living room. That's where everyone was. They were discussing what to do about the stone.
"Have you figured anything out yet?" Jennifer's grandpa asked.
"No, not yet," Jennifer said.