"Alright, everypony! Welcome to your first day here at Junior Speedsters Flight Camp. We've got a lot to learn over the next few weeks, so we'll need to move quickly."
Rainbow Dash could not have been more excited.
"All I have to do is out fly the other ponies here, and I'll be a Wonderbolt!" The little filly thought to herself while her fellow students mingled amongst each other.
Rainbow Dash eagerly hung onto her instructor's every word.
"Now, the first thing we'll need to do is assign each of you a cabin to stay in. To get started, I'll need everypony to split into two groups. Fillies on one side, and colts on the other."
The pipsqueak pegasus took her place with the rest of the boys, and patiently waited for further instruction. She was far too zoned in on her instructor to notice the ponies around her, who had begun to laugh and point in her direction.
"She thinks she's a colt!" one of the boys jeered.
"I wonder why she's not over here?" a filly whispered into the ear of another.
The camp counselor in charge of the group took immediate action.
"Children! That's quite enough."
She walked up to Rainbow, who was still completely oblivious to what was really going on. She checked her clipboard, looking for the right name.
"Rainbow Dash, is it?"
The colorfully-maned pony nodded and smiled. "That's me!"
"I see," her instructor said in a concerning tone. "Honey, you need to go stand over on that end with the rest of the fillies, okay?" She gestured towards the girls, who were still snickering, trying hard not to burst into laughter again.
Rainbow looked up to her teacher. "But, I'm---"
"No buts, Sweetie. Go where you belong, so we can get started."
" Okay." Dash let her head hang low as she made her way to what she considered the wrong group for her.
Both sides began to laugh again, forcing a combination of tears and sniffles from the deflated filly.
Rainbow Dash rolled over, falling out of the bed across from Twilight Sparkle's. She smacked her muzzle against the wooden floor, simultaneously grunting and scrunching up her face as she did so. Dash wasn't used to sleeping in a real bed, one not made of cloud. The fall this time didn't hurt nearly as much, considering is was just a couple of feet to the ground below.
The day before, when Twilight and Dash got to the library, Twilight promptly dictated a letter to Spike outlining Rainbow's willingness to have an audience with Princess Celestia in Canterlot. The two spent the rest of the evening waiting for a reply which would let them know when they could visit. They ended up waiting most of the night in separate beds, sharing stories and laughter over hot tea with milk.
Rainbow, who was then unwillingly kissing the floor, took this moment of thankfully unnoticed humiliation to ponder over the memory her subconscious had shared with her during her slumber.
"Ugh why that dream again?" She thought to herself.
It had happened such a long time ago, but the memory of her first day at Junior Speedsters Flight Camp would not leave her. It was the first time she recognized the problem she'd been living with her whole life; the fact she was indeed, a mare.
However, the memory had lost its sting over the years, the same way an open wound loses its sting if left alone for long enough time. There wasn't any point in dwelling on the past, because today was the day everything would change for her.
"Not gonna be a mare for much longer," she whispered whilst picking herself up off the floor.
She rubbed her eyes, looking over to Twilight's bed, which still possessed the purple pony, deeply breathing in and out as she dreamed.
Her eyes caught a glimmer of something moving up and down slowly on Twilight's chest as she slept.
Princess Celestia's reply must have come while the two were sleeping.
Rainbow Dash crawled onto the foot of Twilight's bed, and patiently waited for her friend to wake up, so they could read the news together.