This hints that she is not quite the hard, unfeeling villain of the piece, but one who, if she is to attain what she aims at, will also have to reckon with those feelings of human nature. However, she is more purposeful and less ready to consider secondary matters such as her conscience than Macbeth.
She embraces the spirits saying "Unsex me here, And fill me from the crown to the toe, top-full Of direst cruelty."" The word crown' gives the idea of royalty and indirectly shows Lady Macbeth's own ambition.
"Make thick my blood, Stop up the access and passage to remorse- is a very passionate comment as reptile imagery is created with her wanting her blood to become cold and slow-moving like that of a snake which has devilish connotations. The idea of her having no remorse is continued in these lines showing her lack of compassion towards the imminent killing of Duncan. Her true ruthlessness and inhumanity is seen in the line "And dash'd the brains out- referring to a baby, and the audience reaction would be one of horror and terror that a mother could say such a thing about her child.
Lady Macbeth does not accept her husband's decision to pull out of the murder plot. She goads him and mocks his manhood and courage, manipulating him with cunning and she succeeds in drawing him into her evil. This makes the audience wonder whether Macbeth is the villain or actually the victim and our resentment towards Lady Macbeth increases.
Many lines suggest that Lady Macbeth believed she would kill the king herself "Come, thick night, That my keen knife see not the wound it makes- but in the end it is Lady Macbeth who has some sort of finer feelings about Duncan saying "Had he not resembled My father as he slept, I had done't- and this touch of humanity may allow the audience to feel a certain amount of sympathy for her.
At the start of the play Lady Macbeth is stronger in will than her husband is, but as the play progresses they exchange roles with Macbeth excluding his wife in pivotal decisions such as the murdering of the Macduff family and of Banquo saying "Be innocent of the knowledge, dearest chuck.
