The Echo Stone: Karyn Repeats Jon's Wish

While Jon was in the bathroom, someone entered his room and grabbed the stone. It was Karyn. She had stopped by to ask Jon if she could use the stone to try and fix her breast problem. But when she entered his bedroom, she saw that he wasn't there. She saw the stone just sitting there, and thought that she'd just use it. She figured that Jon wouldn't mind, especially if she was just making a wish to fix her problem. After picking it up, she said "I wish ... girls at my school would think that I'm so hot that they would *beg* me to have sex with them." Her eyes went wide when she realized what she had done. "Wait! I didn't ..." The stone glowed, granting her wish. What happened? Why did she wish that?