This essay clearly describes Lady Macbeth's Character in the play Macbeth by Shakespeare. It is detailed and it has very good examples.

In the play "Macbeth" written by William Shakespeare, Lady Macbeth is one of Shakespeare's most famous and frightening female characters. At the beginning of the play, Lady Macbeth is introduced as a dominant, controlling, cold-blooded wife with an obsessive ambition to achieve kingship for her husband. Her personality begins to change drastically as the play progresses; it gradually disintegrates through a false portrayal of unyielding strength, an unsteady control of her husband and shifting involvement …

…is she now? What, will these hands ne'er be clean? Lady Macbeth's decaying remorse she had chosen to restrain had sunken into her brain, like a sump, slowly grabbing at her thoughts one by one. The darkness had stripped her of her "mask" and she is now engulfed in agony and sorrow. She is helpless. The thought of evil, which she once sought after and accepted, was now an image of terror in her mind.