The War that Saved My Life by Kimberly Brubaker Bradley

rough patches on my skin, and my head felt better now that Miss Smith
brushed my hair for me every morning. She braided it for me into a single
plait down my back, so it stayed neater, out of my way in the wind, and
wasn’t as tangled at night. She brushed me the way I brushed Butter, which
was odd no matter how I thought about it.
“Look,” Jamie cried, pointing to the sky. “It’s a different one!” He ran
across the pasture, trying to get a better view of the plane.
I rode Butter twice around the field before he got me off.
At lunch Miss Smith said she would walk Jamie to school for the first day.
“You’ll be all right by yourself, Ada?” she asked. “Or you could come.”
I shook my head. I wasn’t going near the school. And that turned out to be
lucky. The minute Miss Smith left with Jamie I climbed back onto Butter, and
so I was there when the strange horse jumped into our field.