The correct response based on the story "The Open Window" is:
Her familiarity allows her to invent an otherworldly explanation for events she can easily predict; Nuttel’s unfamiliarity makes him believe this as truth.
Vera's knowledge of her surroundings and the family's history allows her to fabricate a convincing story that exploits Nuttel's lack of understanding, ultimately leading him to a dramatic misunderstanding of the situation.