"Well, I want you out of here and back where you can't ruin my life," the Other Sarah said.
"Ruin your life?" Sarah asked. "Look at you. You're a total geek. The only thing I could do to you is help you."
"Haven't you heard anything I've said?" the Other Sarah asked. "Geeks and nerds are popular here. That means I'm popular. If you somehow make me more like you, I'll be a loser. And I certainly don't want that. So, the sooner you leave, the better."
"But how can I get back if I don't even know how I got here in the first place?" Sarah asked.
"Actually, there are some tests that we can conduct," the Other Sarah said.
Meanwhile, in Sarah's native universe, Jon was discovering what his careless wish had done to Sarah ... and was beginning to do to others as well.