In the end, the narrator and Maggie watch Dee ride away. We might expect them to be pretty bummed: their big visit was about as pleasant as an afternoon spent at the dentist's office. Plus, Dee doesn't exactly leave on good terms. The narrator doesn't get the big television happy ending that she dreamed about in the beginning of the story, that's for sure.
But the narrator and Maggie actually seem pretty happy in the end, as the narrator tells us:
[…] the two of us sat there just enjoying, until it was time to go in the house and go to bed. (83)
This last line tells us how much things have changed in just one afternoon. Both the narrator and Maggie seem to be at peace in a way they weren't in the beginning of the story. Maggie isn't full of fear, and the narrator's happiness doesn't seem to depend on getting Dee's gratitude anymore. She can let go of the fantasy of a happy ending, which ironically enough, seems to make her pretty happy.