The answer is Letter A - <span>He warned her against her fiancé.
Matthew Pocket is Miss Havisham's cousin. He is the only member of the family who openly expressed his opinion about Miss Havisham's fiance, </span>Compeyson. That <span>Compeyson </span>is not a true gentleman and that she should be careful of him. Yet, Havisham ordered him out of her house.