Princess Celestia was nervously pacing in the throne room worriedly. "Oh what is going to happen, will they like each other. What if Luna doesn't like her or she doesn't like Luna. I should calm down right, I mean nothing extreme is going to happen, but whatever if it does!!? I should reeeeeally stop talking to myself. Calm down Celestia, if anything extreme does happen you'll be there to control the situation. Aaaand I'm talking to myself again." Celestia slowly took a deep breath in and a deep breath out as she slowly flew over to her throne and sat down.
Soon enough, the doors slowly opened with a soft creak and a sweet voice asked, "Hello auntie, what can I do for you today?". Slowly, the owner of that voice entered. She was a tall slim alicorn mare, with a flawless baby pink coat, with a slightly curled tri-coloured mane of violet, magenta and peach. Her eyes were the colour of lavender and she was adorned in a golden tiara, shoes and collar.
"Ah Cadance, you're here. I know you must be wondering why I called you here but please be patient. I'll tell you as soon as she arrives."
"Auntie who're you talking about and don't you have to raise the moon?"
"As I said, you must be patient."
After about 5 minutes, a rather wise and authoritative voice called out, "Sister, didst thou summon us to thy throne room?" Soon entered an alicorn who was only slightly taller than Princess Cadance. Her coat was a dark cornflower blue, her rather etherial-looking, dark indigo mane, was billowing in a non-existent wind. Her eyes were a light cerulean and she was adorned in a black tiara, a collar a crescent moon shaped symbol and light cerulean footwear.
"Ah Luna, there you are, I have been waiting for you."
"We apologise for the late arrival but we were busy brining about the night because and as much we hate to brag, your nights were a rather pale imitation of mine. Now where is that pony thou were going to introduce us to?", she asked.
"She's right over here Luna", Celestia replied while pointing towards Cadance.
"SWEET MOON, ANOTHER ALICORN PRINCESS", Luna yelled out in her infamous royal canterlot voice.
"Luna, meet our distant niece, Princess Mi Amore Cadenza, or Cadance as she prefers to go by. She is the princess of love", Celestia introduced.
"Greetings Princess Cadenza, we art Luna, Princess of the Night and Princess Celestia's younger sister, but thou can calleth us Luna, or the pony with a bossy long pillock for a big sister, who, with the amount of sweets she eats, should be as as fat a couch potato", she added, with a smirk, earning her a glare from Celestia.
"For your information, I recently went on a diet." Celestia replied, trying her best to keep the annoyance out of her voice, causing an uproar of laughter from Cadance and Luna.
"Auntie Tia, why didn't you ever tell me you had a sister, and where was she all this time?" Cadance asked.
Celestia sighed heavily and readied herself to answer the dreaded yet inevitable question but Luna, sensing her sister's distress, answered in her place.
"Cadance hast thou heard the myth of Nightmare Moon?",
"Um, yes, hasn't everyone?"
"So, let's just say that the myth is actually real, and that Celestia and I were the two sisters that the myth is surrounded around."
"Wait, WHAT? b-but how come nopony ever knew about this?"
"Well, the thing is that, I felt so guilty about banishing Luna, that other ponies knowing was just a reminder of how miserably I failed as a sister", Celestia replied, tears slowly trickling down her face. Luna and Cadance exchanged soft smiles and enveloped Celestia in a hug.
"That's in the past now auntie",
"Cadance is right Celly. I'm back now and I'm not going anywhere anytime soon."
Celestia smiled at how much her sister and distant niece loved her, and yes it was true that despite not being dead, most of her family, her parents and the six mare she'd always regarded as aunts were trapped, someway or another, but that was for later, after all they had all the time in the world, or did they?