What was the best part of "The Open Window"? How was it?

I think
the most clever part of the story is where Mrs.Sappleton finally comes down and begins talking
about how she left the window open because he is expecting her husband and brothers to be
returning home from shooting. She is simply stating the plain facts, but Vera has cunningly
prepared Nuttel to expect Mrs. Sappleton to be mentally unbalanced because of the "family
" she says occurred three years ago. Nuttel, of course, can say nothing to contradict the
woman because he is a stranger, because he thinks it would be useless, and also because he
thinks it would be cruel to try to tell her that the three men are dead. Vera not only knew that
the three hunters would be showing up outside, but the clever girl knew what her aunt was going
to start talking about as soon as she came downstairs. The aunt would know that Nuttel expected
to be introduced to the men of the house, and she would want to explain that they would be
arriving home soon.