This is such a realistic story, and sweet as well.
We have two sisters. The older one, like older sisters everywhere, is very protective of her younger sister. She doesn't jump rope, or go to school, or sew a button without making sure her sister is safe. And her sister lets her, until one day she's tired of having cookies and lemonade managed for her, and tired of being told how to do things and when.
So she leaves. She leaves her house, and her block, and goes right to an empty field where she lies down and thinks about things for a while.
And when her worried big sister comes out the door, the little one stays still and doesn't answer, and doesn't answer, until her older sister sits right down and cries.
At this point the little sister does just the right thing, which she's learned from her older sister. And as they go home, we're told that they now protected each other, and I cry.
It's just a very sweet story, one I really recommend for any sister.