The way she stoops to manipulating her husband into adopting her way of thinking shows that her husband is not very strong or important to her. Her longing for this power takes over her list of priorities and has too strong of an influence on her. She also speaks of the great reward of sovereignty in the end, which shows it is very important to her. In addition to this, she also uses her power of speech to make Macbeth feel badly if he were to back out. She compares her husband to herself, .
and the value of a promise. She lists gruesome things she would rather do than break a promise, as a means of luring him into committing to anything necessary to gain more power for herself. .
How tender "tis to love the babe that milks me: I would, while it was milking in my face, have pluck"d my nipple from his boneless gums, and dash"d the brains out, had I so sworn as you have done to this. (II.vii.60-64).
In this case, the way Lady Macbeth states the gruesome things that she would to in order to keep her promise.This expresses the evil things that are inside her head, and foreshadows what she would to in order to achieve and maintain power. Her morals and values become less important on her quest, and she resorts to transforming her husband's morals into her own in an attempt to satisfy her power binge.
Since Lady Macbeth's persuasions have a drastic effect on Macbeth, the little glimmer of hope that he has of staying a decent and honest person vanishes when he makes up his mind to go through with killing Duncan. After he kills Duncan, he is worried that he will not be able to clean his hands of Duncan's telltale blood. .
Will all great Neptune's ocean wash this blood clean from my hand? No; this my hand will rather the multitudinous seas incarnadine, making the green one red. (II.ii.77-80) .
This shows guilt is beginning to build up within him, because of the life-altering effect that Lady Macbeth has had on him.
