Final answer:
Lady Macbeth desperately tries to wash away her guilt and the bloodstains on her hands by sleepwalking through the castle.
Step-by-step explanation:
Lady Macbeth desperately tries to wash away her guilt and the bloodstains on her hands by sleepwalking through the castle. She constantly replays the murder of King Duncan in her mind and tries to cleanse herself of the sins she and her husband committed. Her sleepwalking and attempts to wash her hands symbolize her overwhelming guilt and her futile efforts to escape it.