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

They sell frocks at F. G. Goode’s, these women in black, and when they arrive for work they don rayon crepe dresses that smell of frequent dry cleaning, cheap talcum powder and sweat.

Last summer, my husband had gone hiking with our two dogs when one of them — a year-old rescue who weighs in at over 50 pounds, can scale steep inclines like a mountain goat and has the speed and grace of an Olympic athlete — suddenly collapsed.