She says he looked like her father as he slept. This is why she didn't kill him herself. A feeble excuse, I say; she could talk the talk but could not walk the walk.
Duncan's grooms.
They knock out the king's bodyguards with a Mickey Finn and and frame them for the crime and then execute them before they have a chance to defend themselves. Later, Macbeth suggests that they were in the pay of the King's sons who had the best motive for the crime.
Lady Macbeth drugs the guards stationed outside King Duncan's chamber to ensure they are unconscious and unable to interfere with her plan to frame them for Duncan's murder. This allows Macbeth to easily access Duncan's chamber and carry out the assassination.
Not very honest. She is living up to her own advice: "Look like the innocent flower, but be the serpent under it".
When LM read's Macbeth's letter, she immediately starts envisioning herself as queen. This influences her to start thinking of how to manipulate her husband Macbeth into killing King Duncan so the prophecy becomes true .
Lady Macbeth advises her husband, Macbeth, to act innocent and welcoming when King Duncan visits their castle. She tells him to appear normal and hide their true intentions of murder. Lady Macbeth suggests that Macbeth should make sure their plan is executed swiftly and confidently to avoid suspicion.
Lady Macbeth made the plan. The grooms who were to be guarding the king were to be made so drunk that they would not wake. Macbeth was to go into Duncan's rooms, steal the guards' daggers, kill Duncan with them, wipe the blood on the grooms so they would look guilty and leave the daggers there, and return to Lady Macbeth after which they were to return to bed.
Macbeth needs to look innocent, but underneath his fake appearance, he needs to be bold, determined, and deadly. Lady Macbeth is also telling Macbeth to pretend to be a friend, when he is actually the enemy, or to act like he is honest, when he is actually deceitful. When Lad Macbeth says, "But be the serpent underneath it", Lady Macbeth might be referring to herself, that she is the serpent under Macbeth, and that Macbeth is the mask, or screen, which diverts attention from Lady Macbeth.It shows how Macbeth needs to be the nice to Duncan to prove his innocence even though he has agreed to kill him- appearances can be deceiving.
Duncan is murdered in 2.3. By 2.4, Macduff is already suspicious. He's the first one to think something may be going on at the castle--so consequently, he flees and does not stay for Macbeth's coronation. We hear this in 2.4.37-38.
Nothing. She has told Macbeth in the previous scene that the plan is to "look like the innocent flower but be the serpent under it". Her welcome of Duncan is 100% innocent flower, which is what we should expect.
stairs, hide our fires;/ let not light see my black and deep desires:/ the eye wink at the hand; yet let that be,/ which the eye fears, when it is done to see
When Macbeth starts having second thoughts about killing the king, Duncan, Lady Macbeth questions his manhood and says he is a coward. She says she would have killed her own baby rather than break a promise such as the one Macbeth made her (to kill Duncan). She also says that her love for him from that time onwards will depend on whether he kills the king or not.