That is the part I hold onto, on the hard days — not that I nearly failed him, but that when it counted, when he finally found the one form of the message I could not explain away, I read it and I stood up and I got us out.

A child should never have to be that brave.

But if mine had to be, I am grateful past speaking that I turned out to be a mother who moved when he was.

That evening Kai came home from robotics club full of talk about neutron stars — nobody knows exactly what’s inside them, he told me over dinner, and that’s what makes them so wonderful.

Later he looked up from his soup and said, “Hey, Mom.