Final answer:
Lady Macbeth reveals her guilt over the murders committed throughout the play during her sleepwalking scenes; she is observed washing her hands and talking about the crimes.
Step-by-step explanation:
During Lady Macbeth's sleepwalking in Macbeth, she reveals her guilt and complicity in the murders of King Duncan and others. The scenes featuring the gentlewoman and the doctor showcase her mental descent as she reenacts washing the blood off her hands, an act symbolic of her attempt to rid herself of the guilt associated with the crimes she encouraged Macbeth to commit. She also mutters about the murders, showing that she too is unable to escape the psychological consequences of their actions. These revelations expose the psychological turmoil and deep-seated remorse that plague Lady Macbeth, culminating in her downfall.