In act 5, scene 1 of Macbeth—the famous "sleepwalking scene"— Lady Macbeth appears to be reliving the night that Duncan was killed. She moves physically through the scene after Duncan's death, trying to wash the blood off her hands. She talks to herself, saying, "Out damned spot!" (5.1.31), but she also speaks to Macbeth.
LADY MACBETH. ... Fie, my lord, fie!
A soldier, and afeard? What need we fear who knows it,
when none can call our power to account? (220.127.116.11)
She first refers to Macbeth's initial reluctance to kill Macbeth, "We will proceed no further in this business" (1.7.34), and his fear that they will fail in the attempt, "If we should fail?" (1.7.66). She then reassures Macbeth that once Macbeth is king, no one will question them about their involvement in Duncan's murder, and even those who suspect their guilt won't dare call them to account for it.
Throughout this "sleepwalking scene," Lady Macbeth doesn't seem concerned for herself. She appears to express some regret for her...
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