Final answer:
Sophie is worried about the fate of the boys and girls taken to the School of Evil, wondering where they are going and what will happen to them. The possibility of an underground escape is raised as a potential hope for the children.
Step-by-step explanation:
The character Sophie, in the text provided, expressed concern and worry about the fate of the boys and girls taken to the School of Evil. She wondered where they were going and what was going to happen to them. The text suggests that there may be an underground way of escape from the school, indicating Sophie's hope that the children might find a way to avoid any harm or danger.