Cleverly written and sharply observant of the mores of upper-income San Franciscans (the only kind that can even begin to afford to live there), Hemmings novel centers on single mom, Mele, and her toddler daughter, Ellie. When Mele announced to the father of the baby that she was pregnant, he in turn revealed that he was engaged. Her decision to have the baby despite his desertion could only have been made remotely possible with the off-camera financial help of her parents. She seems, throughout the book, to be without other visible means of support yet somehow lives in one of the world’s most expensive places. After some false starts, through the “San Francisco Mommy Club” Mele finds a congenial “play group” of other moms, and one dad, who meet at a local park. My enjoyment of the book was seriously limited by my lack of sympathy for the various “First World Problems” that concern all of them. 223 pp.