From Jon's point of view, Karyn's wish affected his mom by making her breasts smaller. From a size C to a size B, then a bit smaller.
"What's happening to my breasts?" Jon's mom said, panicking, as her top became more loose.
Karyn must have tried to make her breasts smaller. It probably didn't work for Karyn, since it contradicts the other wish she made at school, but it did work for Mom.
His mom touched her much smaller breasts. "They're so small. How could this happen?" She looked at Jon, as if he knew the answer.
"Well, Mom, it's kind of like this. That's a wishing stone. Or ... at least, it was. It doesn't seem to be working quite like it used to. I think it might be linked to the one Karyn has."
"Karyn has one of these?"
"Yeah. But it seems like whatever Karyn wishes for is not only being granted to Karyn, but also to whoever is holding that stone, as well."
"So, Karyn wished for smaller breasts?"
"I think so. I just wish I could contact Karyn to make her stop making wishes. I can't use that stone to make her stop because it doesn't work that way."
"Why don't you just use the phone, Jon? In the mean time, I think I'm gonna have to figure all this out." She walked over to the couch, noticing that when she walked, her breasts didn't move around so much as they did before. It felt as if she didn't have any at all. She had forgotten what it was like, as she hadn't had them this small since she was growing up as a kid.
Jon picked up the phone and was about to call Karyn, when ...
