Disobedience

Disobedience by Jane Hamilton
2000
ISBN 0-385-50117-X

A seventeen-your-old boy, Henry, discovers his mother's affair by reading her email over a period of time. Meanwhile his father and younger sister reenact Civil War battles, with the sister pretending to be a boy. A tarot reader suggests that Henry and his mother were married in a previous life, and Henry develops the theme to consider all members of his family in different combinations in past lives. Henry is growing up and preparing to leave home but is also closely engaged with his family's day-to-day life.