Macbeth - the sleep walking scene.

There are three characters in the sleepwalking scene – Doctor, Gentlewoman and Lady Macbeth.  The sleep walking scene takes place after the death of Duncan.  Lady Macbeth starts to sleepwalk.  This shows that she has stared to become mad and posed as she is having a lot of guilt from the murder of Duncan.  I know this as she says “out, damned spot! Out, I say! One, two. Why then ‘tis time to do’t.  Hell is murky.  Fie, my lord, fie, a soldier, and afeard?  What need we fear who knows it, when none can call our power to account?  Yet who would have thought the old man to have had so much blood in him?”  This shows that she is full of guilt and is scared of going to hell.  Whilst she is saying this, she is constantly washing he hands, trying to wash off the imaginary blood.  The blood from Duncan’s death.  The gentlewoman is obviously worried about Lady Macbeth as this is the second night she has done this, and asks the doctor to come and watch her.  The doctor says there is nothing physically wrong with her, therefore he cant do anything about it.  He says a priest or god is the only people can help her.  The doctor tells the gentlewoman to hide anything that Lady Macbeth can harm herself with.  

This scene is important because