1. Act 3
Her regrets and concerns are expressed in a soliloquy not to M. M is deceptive when he tells LM to act pleasantly to B. knowing he will not return.
In what ways does Lady Macbeth support her husband after the murder has been committed? Think about the following:
Her words to her husband in Scene 2 and his manner towards her
Her behaviour as hostess to her guests
Her words to her husband when he is seeing the ghost
Her attitude towards him after the banquet. Has it changed?
Macbeth no longer confides his plans in LM: he makes decisions without her. He tries to protect her from the knowledge
She tries to be the perfect hostess. She takes control of the situation and tries to calm M but is unable to stop M from revealing his culpability.
She has tried to calm and reassure M but to no avail. He is set on his path of destruction as opposed to one of repentance. He doesn’t even seem to trust LM any longer.
She tries to control what M reveals unsuccessfully. Her tactics no longer work.

2. HOW DOES THE RELATIONSHIP CHANGE IN ACT 3?
In Act 3 the relationship between Macbeth and Lady Macbeth changes because Macbeth becomes independent and acts without the support or advice of his wife. Having supported her husband in Act Two, Lady Macbeth no longer has this role as Macbeth has stopped sharing his thoughts with her and does not rely on her to be told what to do. Therefore, the power shifts, so that it is Macbeth in control and Lady Macbeth who is weak and insecure. The relationship disintegrates further until it has completely broken down by Act 5.

3. Changes in Act 3 Scene 2
In Act 3 Scene 2, Lady Macbeth has become isolated as she cannot speak to her husband without permission and she acknowledges in her soliloquy that she has not gained anything by the murder of Duncan: ‘Nought’s had, all’s spent, / Where our desire is got without content.’ (Act 3 Sc 2) This is the first step to repentance. She appears to realise that calling on the powers of darkness has not made her happy or brought her ‘joy’. However, Lady Macbeth is unable to confide her worries to Macbeth, showing a breakdown in their relationship since he gained his title and as a result, Lady Macbeth is isolated in her feelings of guilt. She was there to support him earlier when he needed help, but he is not there to support her when she feels insecure and unhappy.