Macbeth wrote Lady Macbeth a letter describing his encounter with the witches. Lady Macbeth reads it out at the beginning of Act I Scene 5
She didn't, only Banquo and Macbeth knew.
Macbeth tells it to her in a letter.
Act 5 scene 5 when they hear a scream
He didn't want to tell her of the horrible murder because she was a woman but ironically the killing was all her idea.
Lady Macbeth pushes Macbeth to kill Duncan in act 1. She is stronger and more manly than Macbeth.
she wants to kill duncan so her husband can get his spot
How does lady macbeth cover for macbeth at the banquet?
Lady Macbeth receives the idea that her husband should kill the king after reading a letter from Macbeth describing the witches' prophecy. The prophecy states that Macbeth will become king, leading Lady Macbeth to convince him to take action and seize the throne.
Lady Macbeth echoes the words of the witches when she says "All hail, Macbeth, that shalt be king hereafter!". This echoes the witches' prophecy that Macbeth will become king.
Lady Macbeth found out about the prophecy from her husband, Macbeth, after he shared it with her upon returning from meeting the witches. This prophecy ignited her ambition and fueled her desire for power.
She is excited of all the possibilities if the prophecy comes true. Which is why she starts thinking of how she can manipulate Macbeth into killing king Duncan.
Lady Macbeth is excited about it. Macbeth is of two minds: "This supernatural soliciting cannot be bad; cannot be good."
In Act 1, Scene 5 of "Macbeth," Macbeth and Lady Macbeth discuss the prophecy given by the witches regarding Macbeth's future as king. Lady Macbeth urges Macbeth to seize the opportunity to become king by any means necessary, including murder. This conversation ultimately sets in motion the events that lead to Duncan's assassination and Macbeth's own downfall.
In a weird sense, the prophecy of the witches that Macbeth will be king does. It gets Lady Macbeth thinking that they should hurry things along.
Macbeth is inclined to wait and watch the prophecy come true by itself. Lady M sees the prediction as a call to action, commanding her to incite Macbeth to murder the king.
Act 5 scene 5 when they hear a scream
Lady Macbeth hears a knock at the door in Act 2, Scene 2 of Shakespeare's "Macbeth." She interprets this as an omen of death because it symbolizes a visitor at the castle, which could lead to uncovering the murder she and Macbeth committed.
Lady Macbeth uses Macbeth. She convinces him that he cannot wait for Fate to take its natural course. He must intervene to make things fir the prophecy; he must kill the king and frame his sons to make himself the heir to the throne.
Lady Macbeth learns of her husband's exploits from Macbeth himself, when he writes her a letter detailing the witches' prophecy and his subsequent actions to become king. She also witnesses his growing ambition and desires for power, which further affirm his deeds.