There are only two ponies not joining in on Rainbow's break down. One's a stoic, so the reason is obvious. But what about the Princess of Friendship? Isn't empathy in her job description? And not a single tear.
From Season 5 Episode 5, "Tanks for the Memories."

Inspired from Crying on The Inside By Arwhale.

Yes, I know it's late. As always, your criticism and praise is welcome in equal measure. I do mention shipping, but I think you'll quite like it.
There's also a tiny bit of swearing because in my head canon Twilight would use it for the sake of hyperbole.

I have a video review! Yes, I did watch it, Yes, I know it says don't read it, and frankly you should listen to him! YouTube
Frankly I'm surprised anybody thinks this is good. As mentioned in a tiny blog blurb, I don't plan on revisiting this story because I have other terrible crap to write. I'm sorry for subjecting the internet to this.
But if you think this is bad, just be grateful I don't publish the droll I wrote in High School.

[Complete] Celestia awakens to see an empty world, white sandstone stretching the horizon. She wanders the world as she builds it from her imagination, filling it with life, but as time passes, the world that she created begins to seem like little more than a lucid dream, conjured from the dust.

Twilight isn't having a very good day. An experimental spell blew up in her face, an army of changelings is attacking Canterlot, and she just died. Yet somehow, it looks like it's going to keep going downhill from here.

Given the chance to correct what's gone wrong, Twilight swears she's going to fix all this even if it kills her. Which it will. Frequently.

Cover art by Pixel Prism
Spanish Translation
Series TV Tropes page

"My name is Lyra Heartstrings, and you will not remember me. You won't even remember this conversation. Just like with everypony else I've ever met, everything I do or say will be forgotten. Every letter I've written will appear blank; every piece of evidence I've left behind will end up missing. I'm stuck here in Ponyville because of the same curse that has made me so forgettable. Still, that doesn't stop me from doing the one thing that I love: making music. If my melodies find their way into your heart, then there is still hope for me. If I can't prove that I exist, I can at least prove that my love for each and every one of you exists. Please, listen to my story, my symphony, for it is me."

Cover pic by Spotlight: askspotlight.tumblr.com