Jasmine focused on the magic stone. "Now, lest I lose my grip on power ... I wish I were as powerful as the Sultan."
Suddenly, her vision blurred as she was transported to another room. As the room she appeared in came into focus, she realized that she hadn't just become as powerful as the sultan, but had actually become the sultan. Then, after the wish was completely fulfilled, her mind ceased to exist. She had become the sultan, physically and mentally.
He looked forward to his upcoming wedding with his wife-to-be Johniee.
Since Jasmine became the sultan, Karyn had to go somewhere, so she became Jasmine, but only physically, because it was a side-effect of the wish.
Karyn, in Jasmine's body, looked down at the nearly naked Johniee. She had no memory during which she was forced to act like the sultan, so it was a shock to see her friend Jon as he now was, acting like a total slut and screaming out in joy while performing painful sexual acts.
"Jon?" she barely got out. It was weird hearing Jasmine's voice instead of her own.
But Johniee didn't answer. She was so engulfed by pleasure that she didn't even hear her.