There was once a time where the princesses were much closer to their little ponies. They danced, played and lived in merriment alongside all the different types of ponies.
One day the elder sister hired the best chef in all the land to cook for a banquet she had prepared. On the night of the feast, seat beside her sister, the sun princess watched in awe at the dazzling performance the chef displayed in her honor.
The younger sister had contributed her magic too create a beautiful night sky for the guests, but as she the gathered ponies fawn over the elder princess over the food that been presented, she felt insulted. Throughout the celebration nopony looked up at the stars above. Enraged, the princess of the night yelled at her sister and banned the chef from entering the castle.
The sun princess fled the scene in tears and barricaded herself in her room. Hours soon passed and the time for the older to raise the sun drew near. A few ponies pleaded with their princess to perform her duty, yet she refused. The sky remained for many days while the elder sister hid in her room. Eventually three ponies decided to do their best to draw her out from her solitude. A pegasus tried to scare the princess out with the loud noise she created with her aerial tricks. All it did was frighten the princess, so a unicorn tried another approach. She used her vast knowledge to sing praises to the princess.
The adoration was ignored much to the unicorn's dismay, so the earth pony tried to coax their ruler out by telling jokes. The laughter and good will created by the three ponies finally prompted the sun princess to leave her chambers. Curious, she asked the trio what they were doing and the earth pony answered that were telling jokes because they couldn't have party in the dark. The princess, her earlier sadness forgotten, raised the sun to bring joy back to her subjects lives and decided to throw a party for the three little ponies who cheered her up.
At the party the two sisters met face to face and apologized to one another for their wrong doings, they vowed to take the feelings of the other into account from now on and peace returned to the land.