She kept looking at the generator, and there was something in her stare I did not understand.

It was not curiosity, and it was not envy.

It was the look of a person checking an item off a list.

She said she had been waiting for that machine all day.

And I remember thinking she must have mistaken me for someone else.

So I told her she had the wrong house.

She turned and looked at me for the first time and her expression was perfectly calm.

And that was the part that frightened me.

No, she said, I have the right house.

That heater is mine.

I stood there with a meter in one hand and a flashlight beam bouncing over the concrete. and I understood that this was not a misunderstanding.

A woman with the wrong house is confused and apologetic.

This woman knew exactly which machine sat in my garage, where it had come from, and how recently it had been paid for.

What I did not yet understand was how she knew, or that she had stood in Pike Equipment and Supply that afternoon, telling herself a very different story.

She introduced herself as Patricia Whitmore and then almost as an afterthought said that everyone called her Trish.

She said it the way people say their names when they are used to those names opening doors.

She managed a private service center on the north side of town and she told me Ceo within the first minute along with the fact that she had been driving from store to store since 7 that morning.

Three hardware stores, two farm suppliers, and a rental yard had all told her the same thing.

Her own house had lost power at noon, she said.

And her mother, who was 81 years old, lived with her.

Her voice softened when she said it, and I felt the pull of it because I have a mother of my own.

I told her I was sorry, and I meant it.

Then I told her the rest.

The machine in my garage belonged to me.

I had paid for it less than 2 hours earlier and my own family was sitting in a house that was already losing heat.

Nothing about her situation, however real, changed whose name was on the invoice.

I pulled the folded receipt from my coat and held it out so that she could see my name, the time, and the serial number in the flashlight beam.

Trish glanced at the paper and did not take it.

I noticed that because a person who truly believes she has been wronged by a mistake usually snatches at the evidence wanting to read every line.