How does the Point Of View enhance the story in "the wife's story"?

Le Guin entices the reader and heightens the suspense in the story by limiting the reader to the perspective of the wife and revealing information slowly. This is a clever way to keep the reader guessing throughout the story. While the language she uses is not vague, the tale is imbued with double meaning, so much so that once the twist is reveled, it forces a reinterpretation, and often a rereading, of the entire story.