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"She would dream of silent chambers, draped with Oriental tapestries and lighted by tall bronze floor lamps, and of two handsome butlers in knee breeches, who, drowsy from the heavy warmth cast by the central stove, dozed in large overstuffed armchairs."
What is an example of indirect characterization? The author is presenting Madame Loisel's thoughts and dreams to help us understand her personality.