"Did you bring it?" Jennifer asked. Jennifer Taylor (one of the Taylor twins) was into both theatre and band, two things that Jon's mother used to be interested in back when she was in high school herself. So in this new reality where Linda was a junior at Jon's high school, she and Jennifer had a lot in common.
"Are you kidding?" Linda responded. "Of course I did." She reached into her bag and pulled out what she thought was the wishing stone, but was actually the Age Swap Stone.