Scarlett was thinking of all the things she could wish for. And after a few seconds, she said "I wish I was the most powerful sorceress in the world."
However, no matter how much she knew about magic, she didn't know that the stone had a range on it of no more than a few miles. So, the wish turned her into the most powerful sorceress within a few miles. But considering there weren't too many sorceresses in the world to begin with, she did at least become one of the most powerful.
They all backed away from her, as Scarlett grinned evily. What was she going to do next?