I can't be bothered to write this chapter, Not properly anyway, so it will be far more concise for the most part.
Without further ado...
Rainbow sat in the Post Office, behind the desk at her new job, bored out of her mind. It was her first day, two hours in, and she had done so little. There wasn't much to the job; charging customers for stamps and putting letters in post bags wasn't particularly strenuous, and the shelves of various stationery was still stocked fully.
At first she tried to look busy but as soon as she noticed no one cared she started slacking off. Lazily she scratched a biro over several sheets of paper, doodling pictures of nothing in particular.
She sighed loudly once the pen stopped working. “I miss being unemployed,” she said aloud. “I'd much rather be bored at home.”
With that the bell over the door rang out and broke the silence. Rainbow jumped at it but quickly reclaimed her composure and tried to look professional.
He was a young colt that looked like he was about to shake to bits with nerves.
“Hello there,” Rainbow said in her most customer friendly voice. “How can I help?”
The colt placed a letter on the counter and ran off, either he was in a rush or just hated social interactions.
Rainbow looked at the door that had closed quickly behind the colt and then to the letter. It was hastily written in an embarassed scrawl, just legible, and there was the appropriate stampage. She launched it over her shoulder into the bag and went back to the doodles with a fresh pen. There was nothing else to do.
It was almost lunch time by the time anyone else walked into the post office. The little bell made her jump again. Quickly she sat up straight and smoothed down her mane.
“Hello. How can I help?”
It was a mare not much younger than her, grey in colour with a simple, purple mane. She smiled with a slight menace. “So. You're the new one they hired.”
Rainbow narrowed her eyes at the mare. It sounded like she worked here. “Yes?”
“Nice. I'm the Post Mare, Dizzy Doo.” All menace had left her as she said her name. No one could be called Dizzy without being a lovely person.
“Oh. I'm Rainbow.”
Dizzy smiled. “I can tell. They were quick though. Only put the advert up yesterday.”
“Seemed quick. Didn't even interview me. The mare here just looked up and down and told me to come in today for a trial.”
Dizzy snorted. “Who was it? That middle aged mare with hair in the wrong places?”
Rainbow nodded.
“She's a weird one. You're already an improvement. How's your first day going?”
“It's so boring!” Rainbow said in loud relief, finally able to moan about it to someone.
“I know right?! I started where you were, but as soon as I could I got out of that chair. Delivering mail is so much better.”
“I can see that. I do like being outside.”
“Any post?” Dizzy asked as she suddenly remembered she had a job to do.
Rainbow had to think for a second, unsure of the days events as so little was worth commiting to memory. She checked the bag and pulled out the one letter that was there. “This is it.”
Dizzy scowled as she took it. Only one, she thought. However a smile quickly appeared in its place. “Hey,” she whispered to her back. “You've got a letter.”
A small grey hoof reached round and snatched the letter. Followed were the sounds of ripping paper and a small, girlsih giggle.
“Who's back there?” Rainbow asked with a huge grin beaming.
“Oh yeah, how could I forget. Say hello,” she asked the filly on her back. The filly shook her head. “C'mon. She's a lovely mare. And her hair is a rainbow.”
This intrigued the filly. She peered round quickly to get a glimpse of this colouful mare, and Rainbow's heart melted slightly.
She was a small filly just like her mother in every way, except her mane was yellow and eyes wondered from each other.
“Aww,” Rainbow cooed. “Hello, little one. I'm Rainbow. What's your name?”
the filly was too awestruck to answer so her mother did for her. “This is Ditzy Doo, my little filly.”
“She is just precious.”
Ditzy flashed a goofy smile, showing the several gaps in her gums awaiting new teeth, before hopping down.
Rainbow got a better look at the filly. She was a little older than her own, about ten, but almost as pretty. “You are just adorable! With your lovely coat and mane and such pretty eyes.”
Ditzy looked away shyly and blushed a deep shade of red. So rarely did she get compliments about her eyes.
Dizzy fell a little bit in love with this mare who so perfectly complimented her daughter. Too many times had she had to defend her from mockery. “How many you got then?”
“Excuse me?” Rainbow asked, completely unsure of what she could mean.
“Kids. You clearly have some if you talk to my little Derpy like that.”
Rainbow giggled under her breath. “Derpy?”
Dizzy blushed but was happy to explain. “Yeah! She's so clumsy so she's my little Derpy Hooves!” She was practically lifting off the ground with affection for her daughter.
“Oh my god that's just... aaagh!” It was the only word that could describe how cute it was. “I have three precious fillies myself. Hang on.”
Rainbow popped her head under her desk, into her bag and came back with a few photos. “Here we are. My little Rainbows. Triplets!” she sang.
Dizzy poured over the pictures, unable to look away as they were the only ones to come close to being as perfect as her own daughter. “Oh my god!”
Rainbow beamed with pride. “Yep. Turned six a few months ago. Do you want a look, Derpy?”
Derpy flittered quickly onto the desk, clearly waiting to be asked; she didn't even care that someone not her mother called her Derpy. “They look just like you!”
Raibow smiled. “Yep. All the mares in my family do. My mum and Nana exactly the same too.”
“What are they called?” Derpy asked innocently, with her mother listening in too.
“Well, they are all Rainbow first, but then there's Swirl, Shine and Dash.”
“Rainbow Dash?” Derpy asked curiously.
“Yeah. She's super fast. Faster than any grown up I've seen.”
Derpy's eyes lit up. “She's my favourite!” she declared loudly.
Dizzy scruffed up her daughter’s mane and nuzzled her cheek. “My perfect little Derpy Hooves,” she whispered.
“Say,” Rainbow started, “Shouldn't you be at school?”
Derpy looked away, avoiding all eye contact possible.
“Yeah,” Dizzy said a little ashamed. “She wasn't having a good day.”
“Oh?”
Dizzy sighed. “She's a very smart little filly. Smarter than me when I was her age. But it you rush her she gets angry at herself for not getting it, don't you sweetie?” She played with her daughter’s ear.
Derpy nodded.
“And then you get a little violent, don't you?”
Derpy nodded again. Shame shaking out of her.
“So I thought it best to give her the day off today, after the school told me she flipped a table. But it's great because now she can help me with the post!”
Derpy smiled. Helping with the post and being with her mother were her favourite things. She played herself into her mother's hoof.
“I'll tell ya what. My Swirl would love you.” Rainbow cracked a smile. “She's always a little violent and getting into fights.”
Somehow this made Derpy feel a lot better about herself, just because she wasn't the only one to get angry. “Can we get lunch?” she asked as her stomach growled.
“I didn't even notice the time. Of course. Let's go somewhere nice. Hop on!”
Derpy didn't need asking twice. In a bound she landed back on her mother's back for a comfy ride.
“It was lovely meeting you both.” Rainbow shook Dizzy's hoof and waved at Derpy. “We should get together one day. It's only fair for you to meet my three.”
Dizzy smiled. “I'd like that.”
They left Rainbow alone once again, only in a much better mood as only making a new friend could do. She walked to the staff room, warmed up her noodles and slurped away happily.
Right. That's the bit I was going to write. I love Derpy. She's the best. And she appears later in bits I want to keep in so I had to introduce her somewhere.
Other things that happen in this chapter:
Swirl breaks her leg in a fight with Hoops (Ticker is mostly fine), but it's okay as she dislocated his wing, which for a pegasus is a much worse thing to happen.
Dash gets her cutie mark. We've all seen that episode so why would I write it again?