I had scrubbed her floors and been told I’d missed a corner.

I had given up an afternoon to drive her to appointments and been told, on the way home, that a real daughter-in-law would have offered sooner.

There was no act of service large enough to earn a thank-you and none small enough to escape a correction, because the point had never been the service.

The point had been the hierarchy — the daily, grinding reminder that I was the lucky, lesser woman her son had generously taken in, and that gratitude was rent I would pay for the rest of my life.

Standing over my hospital bed, with my leg in a cast, she had found one more occasion to collect it.

Zane planted himself at the foot of the bed and squared his shoulders, pitching his voice so the nurses in the corridor would hear.