After the light from the stone dissipated, Jon looked around his room. Nothing had changed. But, of course, that's what he expected. Only the girls mentioned in his wish would change.
Except, when he took a closer look around his bedroom, he noticed that some things had changed, like the photos of him and Karyn. Now those same photos were of him and Melony Tyne, who (in the photo) was dressed very similarly to Karyn.
Speaking of Karyn, Jon wondered how much she had changed. So he decided to leave his house and pay her a visit.