Answer:
Audience realize about vera's tone in the last paragraph is that vera is unscrupulous and imaginative storyteller. Sappleton leaves that window open in the hopes that someday her husband will return. At the end of the story it reveals that, at least to Nuttel, vera’s story is true. And it also reveals at the end of the story vera is a bit unhinged and the Mr. Sappleton is very much alive. Although Vera’s and Nuttel have a lot of dissimilarities but there were also some common things between them like both characters are affected by their sounding environment.