More than once, Sarah had wished for things that contradicted former wishes, but the wishes were always granted anyway. The reason for this was that Sarah didn't have the stone that Jon inherited from his grandfather. It was a different stone, one that allowed all wishes (whether it was stated to be permanent or not) to be contradicted.
But where was the original stone that Jon showed to Karyn, when she accidentally wished for big breasts and blond hair? If Ethel or Bambi could get their hands on it, maybe they could undo what Sarah did to them. However, it was more likely that someone just as bad as Sarah had the original stone.
So who had the stone?
