Lady Macbeth goes through three stages: 1) Ambitiously supporting Macbeth's rise to power before Duncan's murder. 2) Withdrawing due to guilt after enabling Duncan's murder. 3) Sleepwalking and expressing her repressed conscience alone, showing her true fragile nature, before committing suicide. While initially taking on cruelty to help Macbeth, Lady Macbeth is ultimately revealed to possess morality, with her involvement making her a victim of her own devotion to her husband's ambition.