★ Moonsugar

It only took a few hours after Luna was defeated by Celestia for the citizens of the kingdom to crow unruly. They demanded answers from the royals, the guards, anypony they could get their hooves on. A lot of this frustration was pointed towards Callisto. Princess Celestia had shut herself away for the time being, and any appearance was abrupt and frightening. So the next best option was to heckle Luna's daughter. The questions, the rumours, the gossip -- it all got to Callisto, and it caused her to be incredibly anxious and jumpy. She accidentally used her magic on a stallion that had snuck into the castle, and the fearmongering spread like wildfire. 'What are the royals doing? They're going rogue! They're gonna kill us all!'

After weeks of nonstop interruptions and more aggressive attempts at finding answers, Callisto was at her wit's end. She was paranoid, unable to sleep, and it was disastrously affecting her work. So, in a fit of frustration, she concocted a powerful memory spell. Within the day, the princess of memories was forgotten. And it was heavenly, until she realised it meant no one knew her within the castle. She fled, upset with herself for doing something so rash. Callisto flew all the way to the Crystal Empire, where it seemed her magic was not able to reach, but even the townsfolk there weren't too keen on who she was. Callisto decided it was a good chance to live a normal life, and began hiding her wings. But she was originally born a pegasus, so she went to the College of Magic and requested an amulet to hide her horn instead.

As the decades and centuries passed, Callisto's entire existence came into question. Both in the forms of her identity, and the mysterious 'missing princess' theory many ponies gossiped about. Her name, Callisto, was one common in New Canterlot, but the modern naming schemes were less formal. So, she changed her name to be Moonsugar, as it included her first and middle names in theme. She also cut her hair, as the long ans flowy pigtails were suspicious as best. Moonsugar was content to continue hiding out in various parts of the world, and had, until about twenty years after her mother's return.

Luna coming back had occurred to Moonsugar before, but she never thought much of it. She was still very upset with her mother, as she felt abandoned. She couldn't understand why Luna had become a Deviate, and so she never bothered trying to come back to Canterlot. But the locations Moonsugar could live without being caught by the elders whom she once was neighbors with was growing slim, and she was forced to come within close proximity of the kingdom -- to West Ponyville. She did not suspect anything to come of it, as the ex-royal lived almost a millennia without hiccough... How wrong she was.

A young filly by the name of Mangolia Boulevard was found on the front steps of Moonsugar's homestead. Only, the name of the street she lived on as Magnolia Boulevard, and this filly was actually suffering from amnesia. How lucky for the ex-princess of memories. Moonsugar, of course, let her stay while trying to decide the best course of action. She even attempted to search through her memories, but with a few centuries without practice, Moonsugar was more than rusty, and caused one of the memories to fade. However, they were able to determine where some of the images were from -- Canterlot. Of course.

Moonsugar huffed and grumbled and tried to resist the filly's puppy-dog eyes, but she eventually gave in. Together, they wandered from Ponyville to Canterlot. And on their journey, Moonsugar tried not to give away too many details, but it had been a long time since she had to hide herself from someone non-stop. So Magnolia quickly became aware that the stranger assisting her was the missing princess rumoured by conspiracy theorists and little foals on the playground. Magnolia attempted every form of persuasion she could, and eventually -- with a little guilt tripping -- convinced Moonsugar to return to the castle.