How does the author use foreshadowing in Pale Horse, Pale Rider: Three Short Novels?

Although the reader knows right away that Aunt Amy died young, there is still some dramatic tension as the reader wonders how Amy died or why it matters. Amy herself foreshadowed her own death several times, melodramatically claiming that she was about to die. Her relations also saw disaster coming, but they did not realize how right they were to worry that Amy's capricious ways would lead to her downfall.