I know a lot of آپ are angry and upset at Caroline for celebrating Klaus's death at the end of 3x21. I wasn't, and this is why.

I have a theory about Caroline's feelings towards the end of the episode. It is my belief that Caroline was upset about Klaus's death. However, she couldn't handle the thought that maybe she did care, so she decided to throw a party in hopes that forcing herself to celebrate would convince herself that she didn't care.

I really think that whole party idea was just Caroline being in denial of her feelings. There's just no way she could be that happy after the moment...