When the doctor asks the gentlewoman to report what she has noticed, she refuses to do that for two reasons. Firstly, she probably refuses to tell the doctor about Lady Macbeth's strange behavior because she is her gentlewoman, so she should take care of her and be loyal to her.
Explanation:
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Answer: authentic to the characters and setting of the story; the slang that they use kind of gives an idea that they may not be very educated and/or live in the country, which also refers to the setting.<span> </span>