Lady Macbeth is then able to exclaim in horror "What! In our House!" to the murder of Duncan but whilst in complete control, to draw away the suspicion from Macbeth. When however she finds out that Macbeth has killed the guards she faints "Help me Hence" but is this a another sign of an act to again draw away the suspicion from Macbeth or did she faint from shocked dismay. I believe she was shocked because I think that Lady Macbeth was surprised that she was able to get Macbeth to commit the murder of Duncan, but was shocked at how over one night and in fear, Macbeth could kill two more men in cold blood.
Lady Macbeth is still strongly in control as the play proceeds and is able to handle crises very well which is shown at the banquet incident where Macbeth sees the ghost of Banquo, but Lady Macbeth is quick to lie for Macbeth to conceal the real ideas that are happening. As Macbeth progresses with his evil acts, however, Lady Macbeth starts to go mad which is almost like what her prophecy mentioned. She also hallucinates like her husband but this time about trying to cleanse her hands of the blood that will not wash off. Even though she may be a strong character greatly supporting her husband she is reduced and battered by the deeds and her conscience which she was able to rid from Macbeth, eventually drives her insane. She then kills herself unable to remove the "damned spot". At his wife’s suicide Macbeth has already thrown away his conscience, so much so, that Macbeth commits even more evil acts afterwards without even admitting her to his conscience.
Over the course of the play Macbeth and Lady Macbeth greatly change with respect to their characters and their personalities. Although Macbeth was weak at first it was the strong Lady Macbeth who helped him through the first murder but in sacrifice to controlling Macbeth and his conscience she lost control of hers and in consequence turned insane and killed herself. Thus in the end it was worthy to call Macbeth and his wife "a dead butcher and his fiend like queen" but it must not be forgotten that at the beginning of the play
If Macbeth is indecisive, Lady Macbeth is just the opposite a character with such a single vision and drive for advancement that she cannot help but bring about her own demise. And yet her very ruthlessness is another form of ambiguity, for in swearing to help Macbeth realize the Weird Sisters' prophecy, she must cast off her femininity. In a speech at the beginning of scene five, she calls on the spirits of the air to take away her womanhood:
Come you spirits
That tend on mortal thoughts, unsex me here,
And fill me from the crown to the toe top-full
Of direst cruelty. Make thick my blood.
Stop up th'access and passage to remorse,
That no compunctious visitings of nature
Shake my fell purpose, nor keep peace between
Th'effect and it. Come to my woman's breasts
And take my milk for gall, you murd'ring ministers (I.v 47-55).
Lady Macbeth sees "remorse" and "peace" as feminine virtues, and in order to void herself of such compassion she must be "unsexed." That she sees femininity as soft and kind is evident in the fact that she calls the waffling Macbeth womanish, telling him that only when he has murdered Duncan will he be a man. And whereas she wants to turn her mother's milk into "gall," she complains that Macbeth is "too full o' th' milk of human kindness" (I.v 17). Later she reinforces the rejection of her femininity by claiming that she would go so far as to cast off all of the motherly sentiments that go along with it:
I have given suck, and know
How tender Œtis to love the babe that milks me.
I would, while it was smiling in my face,
Have plucked my nipple from his boneless gums
And dashed its brains out, had I so sworn as you
Have done to this (I.vii 61-67).
However, this does not mean that in rejecting her femininity she becomes a man. Instead she becomes a woman devoid of the sexual characteristics and sentimentality that make her a woman. She becomes entirely unnatural and inhuman. Like the supernatural Weird Sisters with their beards, Lady Macbeth becomes something that does not fit into the natural world
Act 1, scene 5
At Inverness, Lady Macbeth reads a letter from Macbeth telling of his meeting with the witches. She fears that his nature is not ruthless enough, is "too full o' th' milk of human kindness," to murder Duncan and assure the completion of the witches' prophesy. He has ambition enough, she claims, but lacks the gumption to act on it. She then implores him to hurry home so that she can "pour [her] spirits in [his] ear," in other words, goad him on to the murder he must commit. When a messenger arrives with the news that Duncan is coming, Lady Macbeth calls on the heavenly powers to "unsex me here" and fill her with cruelty, taking from her all natural womanly compassion. When Macbeth arrives, she greets him as Glamis and Cawdor and urges him to "look like th'innocent flower, / but be the serpent under Œt," and states that she will make all the preparations for the king's visit and subsequent murder.
