<u>Lady Macbeth fears that her husband does not possess the personality traits that are necessary to achieve his main goal</u><u>: </u><u>to ascend to the throne</u><u>.</u> In other words,<u> she is worried that her husband is too kind to do what it takes to become king</u>, which is murdering Duncan. Moreover, in the play, she is the one that convinces Macbeth to do whatever is necessary to take the throne. Lady Macbeth is also the one that plans Duncan's death and calls her husband 'a coward' when Macbeth tells her that he should not kill Duncan.
Using force or trying to persuade someone through sarcasm or irony could be viewed as one of the worst ways to persuade someone into believing something you want to prove.
