Hi everyone! I forgot to mention the story starts way before Nightmare Moon.
Over fifteen years ago a rare type of changeling was born. She was half pony half changeling. She was also the fifth daughter of Queen Chrysalis and Hondo Flanks, Rarity's father. Of course Rarity's father didn't know, considering he was under a changeling mind control spell and didn't remember the encounter. Chrysalis was quite surprised when a bright green royal egg was laid by her instead of the normal drone ones. Usually a changeling Queen only had four royal daughters, but Chrysalis wasn't one to complain at the prospect of having another daughter.
As soon as she finished doing her usual obligations for the hive she settled down and waited for this egg to hatch. She waited for what seemed like hours until it finally began to hatch. When it opened Chrysalis heard the laugh of her worst and scariest friends, Discord. Hearing his laugh made her fear that he had done something to the child, but then she remembered he was stuck in stone. When she looked into the egg she was struck with pure terror. Her daughter had a white coat and brown pony hair instead of cobweb like changeling hair. It was undoubtly a changeling for it had a horn like Chrysalis, but the size of a normal pony and had insect like wings. She instantly remembered the other night when she had tricked that stallion, Hondo Flanks into believing that she was his wife who was kind of hard considering his wife was at full term pregnancy which was difficult to copy. He had given her more than love. He had given her a daughter. This was both good and weird. This would be incredibly weird if his wife gave birth the same day. She suddenly realized why it took so long for the egg to hatch. She couldn't be for sure so she asked one of her drones to go check the Ponyville hospital to see if Hondo's wife had delivered her child. It took on a few moments for the drone to return.
"So has she?" asked Chrysalis nervously hoping it wasn't true.
"She has. Would you like to know the gender and name?" the drone responded not knowing if his Queen wanted that answer.
She sighed knowing she was right and replied, "Sure."
"Her name is Rarity," stated the drone calmly.
She sent him out knowing for sure. Her daughter had a half sister and more importantly, they were linked. They may have not been born of the same mother, but were born to the same father at the same hour. This was she heard Discord laugh. It was a joke he had made just for her as pay back for what she had done to him before he turned to stone. It was to make it nearly impossible for daughter to ever meet its sister due to the hate between ponies and changelings. It was very funny, but pure evil.
"Welcome to the world little one. Maybe someday you'll be able to meet your half sister and father," whispered Chrysalis to the child.
Then, the child opened its eyes to reveal beautiful brown dragon like eyes. Chrysalis may have hated ponies with all her heart, but she still found that she was instantly in love with the child. She decided to name her Flower Crisp.
"Flower Crisp. My lovely new bloom in my life," Chrysalis smiled.
The baby cooed gently as she looked upon her mother.
Don't worry. This story will get more exciting in a few more chapters.