I met my former mother-in-law, “Mama Lou,” and my former father-in-law, “Poppo,” when I was not yet 20 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?…