A: "Really late"? Fifteen minutes?! That's a blink of an eye. In a big school, having to go back to one's locker for a forgotten item could take 15min. Needing a washroom might take 15 sometimes. Sorting out a bit of drama among friends could also make a few minutes vanish. An hour is "really late". Fifteen minutes is "a little late". B: Blaming OP because apparently you think it's predictable for a strict guardian to react this way, & preventable? Rendering a minor homeless over a small inconvenience is insane. Even if OP knew their aunt was insane, that still doesn't make it OP's fault. And depending what caused their lateness, even that may have not been their fault. Certainly, if this was the millionth incident of lateness, or was for a foolish reason (OP was just chatting with pals), or on a day where the schedule was especially tight, anger would be appropriate. I can't imagine a circumstance where homelessness & excommunication would be a just punishment though.

It seems like there’s more to it than just you being late. If most of your family is against you, that says a lot about you as a person