Rainbow Dash receives a letter from an old friend detailing their harsh foalhood and resurfacing memories she had tried to forget
"You didn't tell them did you.
You didn't tell your friends that you grew up in a dilapidated orphanage. You didn't tell them you endured years of child abuse. You didn't tell them that everypony told you that you'd never be special. You didn't tell them your father gave you up because he spent all his bits drowning his sorrows in cider. You didn't tell them of the little family you made, and of the happiness they brought you. Of our flight sessions beneath the stars, wings and hearts beating in tandem."
"And look what it has cost you."

They wouldn't understand anyway
An RD one shot
A HUGE THANKS TO MY PREREADER/EDITOR WhatMakesaRainbow