How does the narrator of the fall of the house of usher react to his glimpse of usher's sister?

In "The Fall of the House of Usher," the narrator is initially struck by the eerie and ghostly appearance of Madeline Usher when he catches a glimpse of her. He describes her as resembling a death-like figure, evoking both fear and sympathy. This moment heightens the sense of dread and foreboding that permeates the story, foreshadowing the tragic events to come. The narrator's reaction reveals his awareness of the deep, unsettling connection between the siblings and the decaying house itself.