Final answer:
The dialogue hints at themes of secrecy and intrigue within the context of a non-governmental agency, showcasing character interactions that develop the story.
Step-by-step explanation:
The dialogue you've presented appears to derive from a scene that may involve a non-governmental agency, classified affairs, and a setting possibly in Washington. Without more context, it's challenging to determine the specific nature of Miss Scarlet's work based on Mrs. Peacock's reaction, which seems to question or express surprise. However, such dialogues are often rich ground for exploring themes of secrecy, intrigue, and societal perceptions in literature. Dialogues in drama can serve to reveal character's professions, foreshadow plot developments, or provoke character interactions that contribute to the narrative's tension and the audience's engagement with the story.