Answer:
"Sounds like the 'Arabian Nights,'" said Mrs. White, as she rose and began to set the supper. "Don't you think you might wish for four pairs of hands for me."
Explanation:
These sentences are the ones that demonstrate that the White family do not believe in the power of the talisman. In these lines, we learn that Mrs. White compares the story to the Arabian Nights. This implies that the woman believes the tale to be as fictitious as a fairytale or a legend. Moreover, Mrs. White asks for four pairs of hands for herself in a mocking way. This supports the idea that she does not believe in the power of the talisman.