“Don’t punish innocent children because you’re stressed about your new life,” she wrote.

“After everything Mom and I have sacrificed for you, is this really the cold, arrogant person you’ve become?” I stood there in the dim room, my daughter finally quieting against my neck, and I let myself actually ask the question I had never once allowed myself to ask in three decades: after everything they had sacrificed for me — what, exactly, was that?

What had they given up?

I ran back through the years looking for it, the great sacrifice I owed this endless debt against, and I could not find it.