Life remains precarious, full of illnesses that swoop in and level the whole family like a field of salted crops; there are beds to tumble from, chairs to run into, chemicals and small chokeable toys to mind. But you do not see death at every corner, merely challenges. The part of you that used to keep calculating the odds of your child’s existence has mostly fallen dormant. It is no longer useful to you; it was never useful to the child; and there is so much in front of you to do.

At 2, your child is a person — she has opinions and fixed beliefs, preferences and tendencies, a group of friends and favorite foods.

What happens when that child is swiftly killed by a runaway piece of everyday environment, at the exact moment you had given up thinking that something could take all of this away from you?

When I am on the playground years from now, watching my son take a fall from the monkey bars, I might not panic. But some part of me will remember: A heartbeat can stop. Hearing a heartbeat for the first time during the ultrasound, and then watching doctors shine light on unresponsive pupils two years later, you stop thinking of a heartbeat as a constant, and more as a favorable weather condition. Now I am a reminder of the most unwelcome message in human history. Children — yours, mine — they don’t necessarily live.

When I realized Greta would not live, I wanted to die so purely, and so simply. I could feel my heart gazing up at me quizzically, asking me in between beats: “Are you sure you want me to keep doing this?” But I found I could not give the order.

Since my son was born, I’ve caught myself making concrete plans for my suicide if he were to die. I will draft a letter to my parents, or even tell them face-to-face. “I’m going to meet my children,” I will say. If the world takes this one, I am not meant to be here. It is a frightening thought because it is so logical. How would anyone argue me out of it? Who would even try?

I do not believe anything bad will happen to him in his infancy. It makes a sort of sense: Nothing bad happened to Greta as an infant. I do not wake up in the middle of the night to check on him. I do not even flinch when I hand him to others and watch them grapple awkwardly with his floppy neck.