she talked him into killing the King by accusing Macbeth of being weak and cowardly
She tells him that he has to die so MacBeth can become king.
Get the guards drunk, stab the king, frame the guards.
The crucial part. Without Lady Macbeth, this would have been Macbeth's final decision: "We will proceed no further in this business." Macbeth would never have killed Duncan unless Lady Macbeth had goaded him into it.
The murder of the king.
Lady Macbeth [b. c. 1015] thought that her husband was too nice and that he needed a murder to take place in order for his glorious royal plans to be realized. In Act 1 Scene 5 of the Shakespearean play, Macbeth's Lady read his letter about the last-minute decision of King Duncan I [d. August 14, 1040] to spend the night, and about the witchly predictions of noble and royal career moves for the Macbeths. She feared her husband's preference for the straight and narrow way would delay or even prevent their becoming King and Queen of Scotland. She planned to help him by creating a job that needed to be filled with the current monarch's murder.
Lady Macbeth isn't anxious to have Duncan at Dunsinane. Dunsinane is the palatial residence where the Macbeths live after they are crowned King and Queen of the Scots. King Duncan is killed at the previous residence of the Macbeths, at Inverness. And the murder of the King is exactly why the Lady seeks, and then delights in, his presence in her home [Act 2 Scenes 5-7].
She tells him that he has to die so MacBeth can become king.
Get the guards drunk, stab the king, frame the guards.
Duncan shows his affection for the Macbeths by giving them gifts. In particular he gives Lady M a jewel.
someone in the castle. if i recall well, a messenger/servant.
Lady M is all for it but Macbeth is unsure and has to be pushed into doing it. He then immediately regrets it.
The answer to thy question you asked is the fact that Macbeth was unable to follow Lady Macbeth's instructions and did not follow the instruction to murder thy king called Duncan. This was because thy sons of Duncan would take macbeths role in being king.
The crucial part. Without Lady Macbeth, this would have been Macbeth's final decision: "We will proceed no further in this business." Macbeth would never have killed Duncan unless Lady Macbeth had goaded him into it.
Because she is determined, she wants Kind Duncan dead because she wants Macbeth to be King.
Lady Macbeth
Lady Macbeth's reaction to Macbeth's confession that he had killed the grooms is one of shock and concern. She realizes that their plan to frame the grooms for King Duncan's murder has been disrupted and that their actions are beginning to spiral out of control. Lady Macbeth tries to maintain a sense of calm and composure while internally grappling with the consequences of their actions.
The murder of the king.