She receives a letter from Macbeth telling her about the witches prophecies. What is Lady Macbeth's main concern about her husband? He is too much of a wimp to kill King Duncan.
In Shakespeare's Macbeth, Macbeth tells his wife about the witches in a letter. Act 1.5 begins with Lady Macbeth reading the letter aloud. She begins the scene reading the word, "They," which is a pronoun that the reader understands refers to the witches.
