I think Lady Macbeth cares about what other people think. We can see that through her behavior towards her husband. She thinks he is unfit to rule because he is weak, and she is constantly trying to make him seem better in other people's eyes. She believes that she would be a much better ruler than him, if she were only a man. She is also trying to distract people from finding out who the real murderer is by fainting and drawing everyone's attention to her so that Macbeth wouldn't confess to his crimes.
