When The Ponies Neigh: Arc of Guilt

FIRST

Applejack warns Applebloom to not go near her Personal Chest ever again. Applebloom insists in her usual "Cutie Mark Crusader" motivation .
-"No Applebloom, not this time, don't touch my Chest, if I ever catch you peeping at my Chest again you'll be sorry"
-"Bu--"
-"YOU'LL BE SORRY"

The matter is forgotten until a few days later, where Applejack surprises Applebloom attempting to spy on what's in Applejack's chest. She quickly trows herself towards Applebloom, but just like a surprised rabbit, Aplebloom escapes from her grip. Applebloom avoids Applejack for a while, letting things cool off, however, when Big Mac wasn't looking, Applejack smacks Applebloom in the face several times. Applebloom is about to cry but Applejack warns her threat-fully "Don't you dare to cry or I'll give you a good reason to do it"

The matter is forgotten once again, Applejack even recovers her usual playful self

One day Aplebloom and Applejack are playing on the Apple fields.

-"Sis, let's play hide and seek"
-"Okay"

Applejack starts counting and after counting to 49, she hears everything's quiet, too quiet

-"Applebloom?"

Nothing, she usually blows her cover giggling, but this time, only the leaves could be heard

-"Come out come out wherever you are" Applejack is still with his mind on the game

She searches every possible place she could hide on the time ratio she counted.

Nothing. Nada. Zero. Zip

Applejack gets a chill running down her spine; she knows where she is. she runs as fast as she can, furious like she's never been before. As she approaches her home, she confirms what she thought; the door was ajar. She sneaks into the house, motivated with rage. Applejack's room's door is open . She slowly walks inside without making any noise to find Applebloom on her bed, watching the insides of her Chest.

Applejack simply looses it

She bangs the door behind her, Applebloom is paralyzed with fear.

-"Applejack, No,NO.NO--" Applejack starts smacking her sister, and I mean REALLY smacking her. Applebloom tries to flee but the closed door works fine as an obstacle, giving Applejack the perfect time to intercept herApplejack trows her to the wall where she bumps her head. Applejack starts kicking her, yes, she kicks her sister with all her might
-"I'm sorry,I'm sorry,I'm sorry" each time Applebloom apologizes Applejack gives an extra effort to kick her harder. Applejack feels that she can't kick anymore, her legs are tired, so she goes into the ground and starts pounding her sister.She doesn't knows why, but she feels like she's just not over punishing Applebloom. The beating continues until Applejack notices that Applebloom isn't moaning anymore She isn't moving either. Applejack opens her eyes widely in realization

-"Applebloom? APPLEBLOOM? Come on! Don't play like that! Applebloom ANSWER ME!".-There is no response

Applejack's eyes start to get wet, she has a "Blue screen of death" kind of moment that lasts for what seems like hours

-"Big Mac!" She finally recovers her shit and thinks on what to do. -She runs errant to the fields where Rainbow Dash usually hangs out. Luckily, she finds Rainbow Dash on her way back home from a day of doing nothing

-"Rainbow Dash! I- n--n-need yrrr yo--r help"

Rainbow Dash thinks on making a joke about her way to talk, but something on her grimace makes her get serious.

-"What is it? Applejack, what's wrong"
-"Ah--ah--I'll explain you there"

Rainbow Dash follows Applejack, concerning more and more as she sees Applejack weeping desperately.
They make it to Applejack's and soon they're at the horrible scene. Rainbow Dash makes a full jaw drop. Applebloom's body is already covered with flies

-"Appleja--" Rainbow Dash can't even properly form her words on the shock "Wh--What have... WHAT DID YOU--?
-"I don't know! I JUST DON'T KNOW! I TOLD HER TO LEAVE MY CHEST ALONE AND SHE JUST KEPT LOOKING AND LOOKING AND I COULDN'T STOP I COULDN--".-Rainbow Dash slaps her, finishing with her Tantrum, Applejack gasps surprised

-"Applejack, snap out of it! Calm down"
Applejack burst into tears

-"Rainbow Dash...I don't wanna go to jail"
-"No! You will not--listen to me" She picks up Applejack by the shoulders "You will NOT go to jail, you got that? I won't let that happen".-As they hug Rainbow Dash can't help to cry herself too. She wipes her tears and breaks the hug.- "I'll be right back, don't move" She flies as fast as she knows how into her home in Cloudsdale. Quickly she lurks into her shelves, desperately trowing dishes and cutlery alike. She finally finds a bunch of plastic bags, big enough to fit a filly inside.
Instantly she flies back to Applejacks, hoping she didn't took too long

-"What took you so long?"
-"Shut up and help me to get her in" .- Applejack takes her sister by the front hooves and Rainbow Dash by the rear
She fits perfectly inside of the black bag. While Rainbow Dash ties a knot on the bags lashes, she orders Applejack to go find something to clean up the blood on the ground. Rapidly she brings a bucket full of water and detergent. She scrubs the remnants of blood off of the ground. When she's finished, it's like nothing have ever happened. Except for the plastic bag of course

-"Applejack, grab a pair of shovels"

Unseen by any pony, they make their way to a clear full of rabbit-warrens. Without talking, they start to dig
If there would be anyone else there, they would hear the panting of both mares as they make the hole on the ground bigger and bigger. Once the hole is deep enough, they throw Applebloom's body inside.
They take the earth once again back into the hole and they cramp it to make it look more natural They even leave some flowers and sprouts so it doesn't looks like somebody dug there. Finally, they add a good layer of snow to cover everything up

-"It looks natural"
-"Yeah, at night"

Both ponies chuckle, but they stop soon after. Something has been broken between the two of them, something important
As they return, neither of them say anything, so Rainbow Dash decides to talk:

-"Applejack, we will never, EVER talk about what happened tonight, you understand me?"
-"..."
-"YOU UNDERSTAND ME!?"
-"Yes. Yes Rainbow Dash, I understand"

Applejack makes her way back home, so does Rainbow Dash.The moon shines high in the sky, the Winter Wrap up is near.