What favor does miss Havisham do for pip in chapter 49? What does she ask him to do?

Miss Havisham asks that Pip come visit her. He finds her again sitting by the fire, but this time she looks very lonely. In fact, as she begins to speak, Pip sees that a big change has come over the cold woman. She seems almost afraid of Pip. Pip tells her how he was giving some of his money to help Herbert with his future, but now must stop since he himself is no longer taking money from his benefactor. Miss Havisham wants to help, and she gives Pip nine hundred pounds to continue to assist Herbert.

She then asks Pip for forgiveness. Pip tells her she is already forgiven and that he needs too much forgiving himself to be able not to forgive others.