I'm looking for a book about a boy whose sister was killed when they were sliding on a shale hill. The boy heals with the help of a horse. I think the title was "my friend crow"

Is this a YA book or Weekly Reader book? Recent or ancient?

Is this a YA book or Weekly Reader book? Recent or ancient?

It was a thin paperback that I read in the late 70's or very early 80's. I think one of my older brothers got it from school. Maybe from weekly reader or scholastic?