I often think about how difficult a job this would be. The woman gets up every morning with the determination to make HER life better by leaving her job of tending to the most needy of people. But their needs are too great, her determination erodes, and she goes home night after night without handing in the letter. Each morning begins anew, letter in the briefcase and hope that she will have the strength to deliver it, but she never does. A living nightmare. Terrible. A metaphor for any day of any life lived under duress without hope of escape. Excellent story.