I was stunned. So I responded the only way I knew how: with a beautifully itemized invoice of my own.

Grandmother Services, Est. 1993
Raising Your Husband: $203,235
Family discount: –$203,195
Total due: $40

I left it in her mailbox.

The next day, my son called, half-laughing, half-apologetic. “She had it coming,” he said. A week later, Lila sent the $40 with the caption: “To settle my debt. Please don’t charge me interest.” I laughed—and donated it to a children’s hospital in Oliver’s name. Because sometimes, the best comeback is grace wrapped in wit… and a very detailed spreadsheet.