Lady Macbeth is never as confident as she is before the death of Duncan. She faints when she hears Macbeth describe the murder of Duncan in graphic detail, and while this could be a ploy to divert attention from him, her later actions indicate that she is wracked with guilt. She obsessively reenacts the scene of the murder as she sleepwalks at night, and perhaps most tragically, she grows more and more estranged from her husband. While before Macbeth told her everything, now, before making the critical decision to kill Banquo, Macbeth says: "Be innocent of the knowledge, dearest chuck, / Till thou applaud the deed" (III.2). This separation from...

Unlike her warrior husband, she never truly saw death. Out of love for his wife as well as ambition, Macbeth killed his king, but in doing so he created a rift that forever separated them, emotionally. After the death of Duncan, Macbeth cannot forgive Lady Macbeth for the sleepless, friendless nights he now endures as a hated king. He is too emotionally numb to even mourn her death. And Lady Macbeth takes her own life because knows that she lost the dearest relationship she ever possessed: her emotionally intimate relationship with her husband, which is as dead as Duncan.