The Glass Castle

Jeannette's parents take no responsibility for her fall from the car. They don't even apologize, although, Rex does try to hug her.

I pulled away from him. "I thought you were going to leave me behind," I said.
"Aww, I'd never do that," he said. "Your brother was trying to tell us that you'd fallen out, but he was blubbering so damned hard we couldn't understand a word he was saying."