Burning the Witch

When Pip forgives Miss Havisham for using Estella to break his heart, he does the one thing that she was never able to, that is, forget and try to move on. Whereas she held the grudge against Compeyson and spent the majority of her life sitting in Satis brooding upon her revenge, Pip manages to forgive, though he will never be able to forget the marks that Estella made upon his heart. She is then purged by both the metaphorical and literal flames and purified from her sins. After the fire, she bears an odd to Mrs. Joe, i.e. in that they both become mentally invalid. This is perhaps a sign that Ms. Havisham is consumed by her sins much as Mrs. Joe was in the form of Orlick. This is following the theme in the book of evildoers receiving a just end.