Then came this January. The doctor at the clinic sat me down and told me my kidneys were failing. I needed dialysis three times a week, and because of the blood pressure drops, I wouldn’t be allowed to drive myself home after the sessions.

When I asked Todd if he could help, Brenda immediately stepped in. She told me they had their own lives, their own jobs, and that my foolish charity work had finally caught up with me. She said it was time for me to see how much my “friends” actually cared.

I didn’t argue. My jaw locked, and I could hear my own pulse drumming in my ears. I just stood there in my own kitchen, looking at the worn linoleum, feeling completely small.

That was the night I called Clara at the church and asked for the sheet.

On Monday morning, my phone rang. I saw Clara’s name on the caller ID and assumed she was calling to tell me the sheet was empty. I had already prepared myself to call a commercial medical transport service that would cost me half of my monthly social security check.

“Martha, you need to get down to the church office right now,” Clara said. Her voice was thick, like she had been crying.

My stomach dropped. I threw on my winter coat, got into the Buick, and ignored the ticking dashboard as I drove over the slushy roads.

When I walked into the warm, carpeted lobby of Grace Methodist, Clara didn’t say a word. She just pointed to the bulletin board. The white paper sign-up sheet was completely covered. Every single slot for my Monday, Wednesday, and Friday rides was filled for the next six months.

There were names I recognized from years ago, but there were also dozens of names I had never seen in my life. I stared at the neat handwriting, my eyes burning. “How on earth did this happen?” I whispered, my voice cracking.

Clara reached into her desk drawer and pulled out a dusty blue spiral-bound notebook. The edges were water-damaged, and the front cover was worn thin. “A young man named David brought this in on Saturday night,” Clara said. “He is Marcus’s grandson.”

I took the notebook. My hands were shaking so badly the paper rustled. I opened the cover. On the very first page, in heavy, dark blue ink, was Marcus’s handwriting from 1999. He had kept his own ledger of every single mile I had driven him.

But below his neat columns, Marcus had written a set of instructions. He called it “Martha’s Mileage.”

He had passed the notebook to his neighbor when he helped him fix his roof. He told him he didn’t want money, but that when the time came, the neighbor had to help someone else and pass the book along. For twenty years, that little blue book had traveled through our county.