Why did the author choose to show Jamie grinning at the end of the narrative?

The choice to show Jamie grinning at the end of the narrative effectively captures the happiness and positive emotion Jamie feels regarding Bobby's visit. This grin suggests a sense of delight and a strong connection to Bobby, reinforcing the narrative's themes of friendship and companionship. By choosing this specific expression at the conclusion of the story, the author conveys not just a fleeting moment of happiness but highlights the importance of the relationship between the characters. This emotional reaction serves to engage the reader with the idea that this visit holds significance for Jamie, ultimately deepening the impact of the story's resolution. Additionally, a grin symbolizes joy, indicating that the visit has brought a moment of lightness or relief to Jamie's day, aligning with the narrative’s overall tone.