A close study of this chapter reveals that Fouqué employs a variety of literary approaches to illustrate the psychological complexities of his characters and to examine the tension that develops between them. The characterization of Undine, the water sprite who marries the knight Huldbrand, is a key aspect in Fouqué’s portrayal of jealousy. Undine’s jealousy is obvious as she deals with the presence of Bertalda, a human lady who causes problems in her marriage. Undine’s actions and language reveal her envy, as she strives to reconcile her otherworldly origins with the human feelings she feels. For example, when Bertalda expresses admiration for Huldbrand, Undine reacts with a mix of uneasiness and possessiveness, indicating the depth of her mental anguish. Furthermore, Fouqué uses subtle narrative tactics to create a sense of uncertainty around Undine’s motivations, confusing the reader’s understanding of her character. Fouqué uses unreliable narration and subtle foreshadowing to suggest Undine’s capacity for both compassion and malevolence, blurring the distinctions between protagonist and adversary. This ambiguity gives dimension to Undine’s character, prompting readers to consider the nature of her jealousy and its ramifications for the story.