The day before my 63rd birthday, I found out that my son had planned a trip and was leaving me behind to look after 18 children. I didn’t say anything at all. On my birthday itself, he called: “Mom, where are you?” I smiled: “Don’t worry … Venice is beautiful!”

I’m Margaret Thompson, sixty-two years old, and I thought I knew exactly who I was. The devoted mother. The doting grandmother.

The woman who always said yes when family needed something. For thirty-seven years, I had built my entire identity around being there for everyone else. But that Tuesday, everything changed.

“Mom, thank God you’re here,” David said, bursting through my front door without knocking. My son has this way of entering rooms like he owns them, his six-foot frame filling the doorway, his designer suit perfectly pressed even at the end of a workday. At thirty-five, David had inherited his father’s confidence and, unfortunately, none of his kindness.

“Jessica and I have been planning this anniversary trip to Napa for months,” he continued, not bothering with pleasantries. “We leave Thursday morning.”