One Plus One by JoJo Moyes

oneBook – Jess is a single mother with a lot on her plate. Her adopted stepson is regularly beaten up by neighborhood thugs, who taunt him for wearing make-up and being a loner. Her young daughter, Tanzie, is a mathematical genius who has an opportunity to go to a special prep school that Jess cannot afford. Jess is estranged from her dead-beat husband, Marty, who lives with his mother and hasn’t supported the children financially or emotionally for two years. To make ends meet, Jess waitresses and cleans houses. One of her clients is the software billionaire, Ed. Although Jess doesn’t know it, Ed is being investigated for insider trading. Their paths cross unexpectedly as Jess sets out on a trip to secure scholarship money for Tanzie. It’s a fun and entertaining adventure as four eccentric and lonely people discover their strengths, vulnerabilities and their “tribes.” Moyes has written several other novels, including Me Before You.