According to the Pattern: Number Six (Classic Series)

She was stronger than most women, but could she win this most important contest? What she saw in the park that fine day changed Miriam Winthrop's life. She had been content with a simple family life, and she thought Claude was deeply in love with her and the children. But obviously her husband wanted the excitement of beautiful society women. So Miriam, shocked and heartbroken, determined to become the type of woman Claude admired and desired. It would take all her skills, most of the little money she had, but she would win him back, if it killed her! - Jacket.