And then it occurred to Zoe. She had wished for everyone in the area to become a Goth. Well, the baby that Zoe's mother was going to have was an 'everyone'. And the baby couldn't be a Goth while in the womb.
Which explained why her mother wasn't pregnant. The question was, what happened to the baby? Was it out of the area? Could it suddenly have become an older sibling? It couldn't be a younger sibling because Zoe's mother had said she had no children after Zoe.
Or was there some other possibility? She asked the stone, "I wish to know what the other wish did to my mother's pregnancy."