In “Went to London, Took the Dog,” Nina Stibbe, author of “Love, Nina,” delivers a funny-sad portrait of midlife.

Whether Orion ought to be feet- or head-up in the night sky depends on the hemisphere. When Stan, a 23-year-old student from South Australia, rides his bike through the Rocky Mountains, he marvels that the constellation is upside down.

I had always dreamed of a job that engaged in some aspect of the business of books. Although I was writing novels and taking on freelance work—for a time I became the queen of the 800-word feature story for a couple of international newspapers, accepting any assignment that came along, from writing about children’s birthday parties to the black market economy in India—I had not had a steady paycheck since my twenties.