A/N I've always wondered what life would have been like if Severus had an older sister. This is my thought on how things would have been. It starts in the Merauders era and gose through to the second wizarding war. It is rated M. For language, sexual situations, and violence. Please enjoy. Also thank you to my wonderful Beta krikanalo for your help with editing this story.

Chapter 1: A Mother's Mistake

Eileen Prince was a fullblooded witch who fell in love with and married a Muggle man named Tobias Snape. At first, Tobias was a kind and loving man who doted on his lovely wife. That all changed in an instant when a strange man came to the door of their home late one cold night. Eileen was sitting on the sofa holding her newborn daughter in her arms when her husband came through the door and dusted the snow from his head and shoulders.

"Sorry that I missed the baby's birth. My damned boss wouldn't let me leave," said Tobias as he removed his heavy coat.

"It's all right, Tobias. The doctors said that everything was fine with the baby," said Eileen as she held the baby closer to her chest.

"Well. Then do I get to see my new son, or what?" asked Tobias eagerly.

Eileen didn't take her eyes off the dark colored ones of the baby girl in her arms. "Um, Tobias... it's not a boy," she said nervously. Tobias's eyes widened and a beaming smile started to spread across his face.

"You mean we've got a baby girl?" he asked as he took a few steps closer and attempted to look into the blankets.

"Yes and no," said Eileen as a hard knock sounded at the front door.

"What do you mean by that?" he asked as he crossed the room to open the door for the unwanted visitor.

Tobias opened the door to reveal a handsome and tall man, with pale skin, jet-black hair, and dark eyes. "Can I help you?" he asked the strangely dressed man. Tom Marvolo Riddle stood at the door and stared past the irritating Muggle who was blocking his path.

"You didn't tell your husband about this, I see," said Tom as he pushed past Tobias and entered the shabby house.

"Didn't tell me about what, exactly?" asked Tobias as he stepped between the strange man and his family.

"Go on and tell him why I'm here, Eileen. Or would you prefer that I tell him?" asked Tom coldly.

Eileen looked down at the baby in her arms and shook her head as the tears began to fall. "It's no use crying over it now, woman," barked Tom in a menacing tone. "You should have known that the baby wasn't his, and that I would come for what belongs to me." Tobias felt threatened by the strange man for some reason and attempted to force the stranger out of his home and away from his wife and child.

"Get the hell out of my house and away from my family, you sociopath!" he screamed as he shoved at the tall handsome man.

Before Tobias knew what was happening he found himself thrown across the room and knocked unconscious. Eileen screamed and ran to block her husband from further attack. "Please, my lord, have mercy," she begged.

"Why should I show mercy to a worthless Muggle?" asked Tom coldly.

"I'll do anything to spare his life, my lord. I love him," she cried as she sunk to her knees in front of him.

"Love is a pointless and useless emotion. You're a pureblood; why should the life of a Muggle matter to you?" asked Tom as he pointed his wand at the unconscious man on the floor.

"My lord, he doesn't deserve to die. He's the first person I've ever met who has treated me with any respect," she pleaded. Tom lowered his wand and narrowed his eyes at the muggle disdainfully.

"I have decided that you may keep your muggle husband. However, I will not allow my child to be raised by him. If you are lucky enough to be blessed with another child who possesses magical abilities, you will train him or her in the ways of the dark arts. If you fail to produce another child with magical abilities or refuse to teach that child the dark arts, you will be forever marked as a blood traitor and be severely punished. Do I make myself clear, Ms. Prince?" asked Tom with a smirk as he took the quiet baby from her mother's arms.

As the baby was taken from her, Eileen attempted to keep her hold. Tom again drew his wand and pointed it at her unconscious husband. "Choose carefully; the baby, or the life of your husband." Eileen loosened her grip on the baby and stepped back, tears running down her face. Tom turned with the baby in his arms and left the room, slamming the door behind him.

As he stepped out into the cold December air, Tom drew his wand and cast a warming charm on the baby girl. He Apparated to a rundown shack in a place in Little Hangleton, where he handed the baby girl over to Walburga Black. The Black family was one that Tom trusted because they shared his beliefs. "Mrs. Black, I am putting my trust in you to raise my daughter properly.

"I have not the time to attend to the needs of such a small one as this, despite the fact that she is my only heir. I will be in contact. When she is of age to understand you will teach her everything she needs to know. My daughter will grow to be a force to be reckoned with. Perhaps when she is old enough she will sit by my side as the dark princess."

Walburga gazed down at the baby who was gazing deeply into the dark eyes of her extremely powerful father with a calm look of comprehension. "My lord, does the child have a name?" Tom was staring back at the baby, a look of fascination on his pale face. The infant was even at such an early age a skilled legilimens. He could hear her speaking to him in Parseltongue. Despite the fact that she couldn't physically speak she was good at getting her point across.

Tom blinked and smiled slightly as he felt his child pull out of his mind. "Her name is Eden Merope Prince. She will not be called by the filthy last name of my dead father, or your noble name. Her mother was a fullblooded witch from a once great family. Thus she deserves to be called whatever she likes," he said.

"My lord… not to be presumptuous, but how can a child of this age have a preference on what she would like to be called?"

"Trust me when I say that this is no ordinary child. She is my princess. She is to be paid with the same respect that you would pay to me. Is that clear?" he asked, a deadly look on his face.

"I understand, my lord. I will take care of her as if she were my own," said Walburga as she bundled the baby girl in her robes to protect her from the bitter cold. Satisfied with her answer, Tom allowed her to leave with the baby.

As Walburga turned to leave his daughter once again entered his mind. Her thoughts were questioning. He answered her aloud in parseltongue. "You are in good hands, Eden. When you are of proper age, we will be reunited. I promise you that I will make this world one that you will be proud to live in."

Back in Darby, in the old house on Spinners End, Tobias awoke on the sofa with an ice pack on his head. His wife was curled up on the floor with her back to him. He didn't remember what had happened to make his head hurt or how he had gotten onto the couch. But what he did remember was enough to make his blood boil. Tonight, on what should have been a wonderful day, he had learned something that in his mind was unforgivable.

Tobias got up and walked up the stairs to the room where his newborn baby daughter should have been, only to find it completely empty. There wasn't even a scrap of furniture to suggest that there was once a baby here. He went to his room, dabbed a bit of cologne on his face, combed his hair, stormed back down the stairs and out the front door leaving it wide open.

It was three days later when Tobias came home to his house on Spinners End. He slammed the front door of the house, making Eileen drop the plate that she was drying. He stood in the doorway to the kitchen glaring at his wife. "Pick it up, throw it away, and get your ass in here when you're done. We need to talk," he said with a slur to his words. When Eileen had finished cleaning up the mess she walked out of the kitchen, was grasped roughly by the hair, and thrown onto the ground.

Tobias reached down and yanked her up by her arm, causing her to scream out in pain. "Tobias, please stop! You're hurting me," cried Eileen. Tobias pushed her up against the wall and lifted her from the ground, one hand on her throat.

"You fucking whore. You slept with another man, had his baby, made me believe that it was mine, and never bothered to tell me the truth!" he yelled, his crooked nose inches from her face.

Eileen wrinkled her nose as the scent of whiskey coming from his breath overwhelmed her. "Tobias, you're drunk. I'm not talking to you when you're drunk!"

He pulled back abruptly and pushed her roughly towards the sofa. "You're not getting away with this, bitch. I want a fucking explanation, and I want it now," he said as he took a seat on the other side.

Eileen walked over to the edge of the sofa timidly. "Sit, bitch," slurred Tobias drunkenly.

"Tobias, first off… when I met you, I didn't know that I was pregnant with his baby. Honestly, had I known I would have told you about it. I had hoped that he would have let me keep the baby and raise her, but he decided otherwise. What happened between him and I was just a one night stand. He made it apparent that he wasn't interested in having a family, and that's all I've ever wanted. I have never been unfaithful to you, Tobias. I love you, and I'll do anything to make it up to you."

Tobias got up and walked outside to the communal bathrooms. He was in there for almost half an hour before he returned to the house smelling of soap.

"I need some more time to think about things," he said as he reached for his coat by the door. "I'm going to work. Have my dinner ready when I get home."

It would be another two years of mental, emotional, and physical abuse before Eileen gave birth to her son, Tobias Severus Snape, whom if she were lucky would never learn of his half-sister until she had died. She would hate to have to face him when he found out about that particular fact.

A/N I hope that you have enjoyed the first chapter of my newest story. Please leave a review and let me know what you think about it so far, Chapter 2 Raising the Dark Princess is up next.