The correct answer is B.
By writing the text on first person, Daly provides information about the narrator's thoughts and feelings that would, otherwise, be unknown for the reader.
Because of the text being in the first person, the reader can know how important and magical the night with the boy had been for the narrator, and how hopeful she was that he would call her. And eventually, how disappointed she was that he never did.
Answer: The reader gets insight to the narrator's thoughts and feelings
