It's possible you are referring to August Boatwright, the head of the Boatwright sisters, who is known for her love of bees and her ability to calm them. She is often seen tending to her beehives and has a deep understanding of their behavior.
While she doesn't work as a mortician, she does have a connection to death in the novel, as she is the one who helps Lily navigate her grief over her mother's death.
It's also possible you're thinking of a different character or a detail from the movie adaptation that is not in the book. Could you provide any more context or details about the character you are looking for?