I met my former mother-in-law, “Mama Lou,” and my former father-in-law, “Poppo,” when I was not yet twenty years old. I hitched a ride to meet them, terrified because I’d spoken to my future mother-in-law on the phone and she sounded exactly like Lauren Bacall.I arrived at their home in Wisconsin and my future father-in-law threw open the door and said, “You must be Carrie! Can I get you a drink?”In the more than twenty years that followed, I never felt anything less than welcome in this family. More surprisingly, I was still welcomed after I was divorced from their ...