I mean... I don't think she "did right" to that boy.
Sure he acted wrong. But she should have just explained instead of being snotty.
That's the thing that annoys me often with those stories where we follow a "child" mc. Is that they interact with children, who are often simply clueless and very young. She's supposed to be an old soul, much more mature than her body's age.
While those kids they aren't mean by nature, they just haven't been explained things at all.
And yet the mc treats them as they would an adult slighting them.
And with the girl, I don't like this kind of plots.
If it was realistic, she's just a little girl that's bored at home and wants to play with the good looking strangers, and probably too shy to talk to a girl her age.
But yeah, she's probably be trouble somehow.
So yeah, I understand you guys thinking, but to me, this is all taken way too seriously. They're just kids.