Who teases the nurse and makes her become crass?

In the novel "The Nurse's Song," the character who teases the nurse is often depicted as a playful or mischievous figure, typically a patient or another character who interacts with her in a lighthearted manner. This teasing prompts the nurse to respond with a more crass or irreverent attitude, reflecting the tension between her professional demeanor and her human emotions. This dynamic illustrates how humor can reveal underlying frustrations and vulnerabilities in her character.