 Let's look at how you can analyse Act 5 Scene 1 when Lady Macbeth goes crazy. Lady Macbeth starts having hallucinations. She says, yet here's a spot and this declarative sentence shows that she's seeing things, she's going crazy. She becomes frantic and says, out damn spot, out our say. Now these exclamatory sentences show that Lady Macbeth is really frantic at the hallucinations that she's seeing. She then says, why then? It is time to do it. Now here in her mind she's thinking that she's still talking to Macbeth and plotting with him on who to kill. But she seems to regret all the bad things she's done because she says, hell is murky. Now this declarative sentence shows that she realises she's not going to be forgiven by God for all her sins. She seems really regretful of killing King Duncan because she asks, yet who would have thought that old man to have so much blood in him? Now this is a rhetorical question basically remembering how much King Duncan bled. Her regret is even made more clear through the alliteration of age and have, had and him. Here we can see that she really regrets having killed King Duncan. That's what's true for crazy.