The pocket was empty.

Panic, sharp and suffocating, gripped my chest. I frantically dumped the contents of my purse onto the motel bed. Lipsticks, loose change, crumpled receipts, and a single, crumpled $5 bill spilled out.

The realization hit me like a physical blow. In my grief-blinded, exhausted haze at 3:00 AM in that diner, I hadn’t left the five-dollar bill under the coffee mug. I had left the vintage $500 bill. I had tipped a teenage waitress my entire safety net.