No, the estate of a deceased individual cannot sue on behalf of the deceased if the defamation occurred after the death of the individual.
Ms. Berjis is licensed to practice law in the State of California. The laws of your jurisdiction may differ and thus this answer is for informational and educational purposes only and is not to be considered as legal advice. Since all facts are not addressed in the question, this answer could change depending on other significant and important facts. This answer in no way constitutes an attorney-client relationship.
A roundup of the best tips and legal advice.