Zoe smiled at her new sister, as she thought up a fitting punishment. But then, the more she thought about it, the more she began to realize that there was no reason to punish her. She didn't do anything bad to her, except for maybe changing her make-up, but since she didn't hear that wish, she thought it was normal to have non-gothic make-up, even after she learned the truth. No, all of Jen's wishes were a plus for Zoe. Not only did Jen cause her to have the real wishing stone, she also made it possible for her to ace all her tests, be friends with Sarah McMillan (her mortal enemy), and make herself obedient to Zoe's will. And to top it all off, she now had another wishing stone. If anything, Zoe should be congratulating Jen, not punishing her.
But that didn't mean that she couldn't have a little fun with her anyways. With her new "power", she could turn Jen into anything and then just change her back when her fun time was over. And since Jen had to stay obedient to her, she would go along with all of it without a word.
Zoe smiled at Jen, as she thought of what to turn her into.