What Is Lady Macbeth Really Evil

The event that I had chose was that Macbeth had found out that Lady Macbeth was really evil, and the fact was that Macbeth had found out that this had been very important to know because he had made the mistake of killing Macduff's family and killing King Duncan. But what was really good was that Macduff had found out what Macbeth had done and what his true colors were, so while Macduff had been with the king of Scotland the king had agreed to help Macduff take Macbeth down, this event is also the cause of the fall of Macbeth and I believe that it is the resolution of this play.