We were stunned when our 19-year-old daughter confessed she’d been secretly dating a 43-year-old man, twice divorced and old enough to be her father. We begged her to end it, but she refused. Then she dropped the real bomb: she was pregnant. My husband lost it and threw her out that night. We thought we’d hit rock bottom, until the police called a week later, asking something that made me burst out in tears directly...