"Have you ever gotten screwed over by a man you never cared all that much for to begin with? Join the club. . . . A joyful journey about the trials of motherhood and found family."--Harper's Bazaar*

Sandy thought she was making her greatest mistake yet when she got unexpectedly pregnant in her mid-thirties by a dating-app flop. Now, her baby Rosie is the love of her life, but trying to co-parent with her daughter's dad, a wannabe rock star, is a challenge--and seems to be veering into catastrophe territory when Sandy finds out through social media that her daughter has a half-sibling Sandy doesn't know anything about.

Enter her ex's ex, Stephanie, the other mother. Sandy is prepared to hate her but when the two women meet, they are shocked to learn how much they have in common beyond the deadbeat father their children share. Now Sandy needs to figure out what her and Rosie's family looks like with all these new additions. Could life in a "mommune" be the answer to her prayers, or just a new brand of chaos?

In this winning story of family both born and chosen, Sandy is about to discover that when nothing goes as planned, the best things become possible.