Author's Note: Hi guys. Here is another typical Supernatural sis-fic. I know there are lots of them out there, but I felt like writing one. Please no negative reviews. I'm not a very good writer, and I'm simply writing this to satisfy my need for emotional Sam/Dean/Sister moments. Lots of angst, chick-flick moments, and more to come. Thanks. :)

Prologue: Alexandra Mary-Janette Winchester

The boys had just finished up the case with the shapeshifter in Missouri, and were camped out in a motel in the middle of nowhere. Dean was leaning against the headboard of his bed, flipping through the crappy channels their motel offered on the television. Nothing but a few old western films and the news was on, yet he flipped through the channels in utter boredom.

Sam on the other hand was sitting at the small table in the corner of the room, looking through the news on his laptop, trying to find a new case for them to check out. There was an interesting one in Ankey, Iowa, where a teenage boy was murdered, leaving only the girlfriend alive. Apparently his body was strung up next to the vehicle, and the girl was claiming the killer was invisible. Perhaps this was something they should look into. Just as he was about to open his mouth to mention it to his brother, Dean's phone rang.

The older boy picked up his cell, frowning when he saw it was a private number. Flipping open the phone, he held it up to his ear. "Hello?" he stated gruffly.

"Dean?" a painfully familiar voice came through the line.

"Dad!" Dean exclaimed, sitting forward on the bed. Immediately, Sam stood up and sat next to his brother so that he could hear the conversation. "Where are you?"

"It doesn't matter," his dad's voice said impatiently. "Look, there's someone on their way to your hotel room, and they'll explain the whole situation to you. I don't have a lot of time, but I just want to apologize beforehand for keeping such a large secret from you boys for so long."

"What secret? What's going on dad?" Dead asked, eyebrows furrowed together in confusion and frustration. "Who's coming?"

"I need to go, but please understand that I did what I thought was best. Take care of each other," their father said, a tone of finality in his voice.

"Wait! Da-" the line went dead, and Dean cussed as he closed his phone.

"Who's coming here?" Sam questioned, standing up to pace the length of the room.

"No idea. We haven't heard from him in how long, and he just fires off with an apology? Something's not right."

"He's always so secretive about stuff that we need to know," Sam ran a hand through his hair before shaking his head. "I'm so tired of him treating us like an afterthought."

Dean wanted to argue, but even he was frustrated with his father. All this time wondering if the man was even alive, countless calls and messages, and then he calls just for that? Leaning back against the headboard, he sighed loudly. As he opened his mouth to say something, a knock sounded on the door. Looking at Sam, he sat up. "That was quick."

"Very," Sam agreed, as the two boys moved to the door. Dean pulled it open, Sam right behind him, and they both froze at the sight of the person in front of them.

It was a young girl, no higher than 4 feet tall. Her hair was a warm brown, and fell to the middle of her back in loose ringlets. Big blue eyes stared up at them as she smiled widely. "Dean! Sam!" she exclaimed in a voice like bells. The boys jolted at the kid knowing their names.

"Uh, yeah. Who are you, kid?" Dean asked, eyebrow lifting in curiosity. Why would their father send a child to their room?

"My name is Alexandra Mary-Janette Winchester, and I'm your sister!" she said happily, as if this wasn't the strangest thing that ever happened. "Well, half-sister, I guess."

The two boys stared at the kid as if she had three heads. Their brains tried to process what the kid had just said, but they seemed to take a long time to buffer. Shrugging, the girl walked past them and put her suitcase and backpack on the ground. Dean shook his head, as if trying to clear his brain out, and shut the door. Both Sam and Dean walked in, the elder leaned against the wall, while Sam sat to the table.

The girl, Alexandra, reached into her pink backpack and pulled out an envelope. "This is for you guys to read and discuss later after I tell you everything! It's from our Daddy." She handed the envelope to Sam, smiling shyly up at him.

"John Winchester is your father?" Dean asked bluntly, looking at the girl's face. He could almost pick out his father's features in the girl. She had a strikingly similar appearance to Sam, who looked like their father.

The kid nodded enthusiastically. "Yeah, he met my mommy about 12 years ago, and I'm 8 now. He would visit me a few times every year, and he would tell me stories about you two! I'm so happy to finally meet my big brothers!"

The two brothers still looked shell shocked, trying to take it all in. "Do you know what Dad does for a job?"

A loud laugh rung through the motel room, as the kid covered her mouth and smiled up at Dean. "Of course, he's a hunter. I've been raised as a hunter by my mom; Dad says I'm a better shot than the both of you!"

"Wait, he let you be raised as a hunter?" Sam sounded horrified at the very idea of someone training such a cute, innocent looking kid to hunt ghosts and monsters.

"Oh yes. I've been trained in hand-to-hand combat, I can shoot, I can throw knives, I know all about the different monsters and how to kill them. They just haven't let me hunt yet, so I've never actually killed anything. Mommy passed away a few days ago, and Dad sent me here to find you two. He said I'm ready to start hunting!" Her face had saddened when she spoke of her mother, but the girl appeared to brush it off and smiled up at them.

Dean ran a hand over his face as Sam gapped at the kid. "So what, we're supposed to take you with us from here on?"

The kid's smile fell at the sharp tone to Dean's voice. A blush tinted her cheeks, and Sam sent a harsh look at his brother. "Well, Daddy says that's up to you both. You don't have to take me with you if you don't want to. He said that if you didn't want me, I can go live with one of his friends." She looked down at her shoes, which Dean didn't fail to notice were combat boots.

A loud sigh escaped Dean as he crossed his arms across his chest. "Fine, you can stay with us for now, and we'll see how things go."

A wide grin lit up the girl's face, and the boys couldn't help but give small smiles back. The kid was ridiculously adorable. "Thank you so much!" she squeeled. "I promise I'll behave, and I won't cause any trouble." The kid looked like she wanted to hug them, but she stepped back and grabbed her backpack.

Sam smiled down at the girl and ruffled her hair gently. "It's really late, why don't you go get ready for bed and we'll talk more in the morning?"

"Ok," she positively gleamed when Sam ruffled her hair, before she turned and darted into the bathroom with her bag.

"Well that's... unexpected," Sam sighed, sitting down again as he opened the envelope. He cleared his throat before he began to read it aloud.

"Boys,

Alexandra must have arrived safe and sound if you received this letter. She was born on April 10th, 1997. She's eight years old, and her mother's name was Janette Delaney. I met her on a hunting trip a long time ago, and we hit it off. Having a kid was never my intention, but I accepted it when it happened. Her mother has just passed away from a terminal cancer, and we had it arranged upon the diagnosis date that this be her future.

Alexandra has been raised from birth as a hunter, and her skills probably rival even that of yours. Only she is small and still easily over muscled, but I believe she is ready to head out into the field. I am sorry to put such responsibility on you both, but I believe you are up to the task. If not, then you can drop her off at Bobby's, and I will find another family for her to hunt with.

She has always known about you both, and it has been her biggest wish to finally meet you. She may cling to you both a bit, but establish boundaries if you would like, and she will comply.

Best of luck boys,

John Winchester."

"Not a very loving father-daughter relationship I guess," Sam commented, putting the letter down and looking up at Dean's stoic expression. "'she will comply.' Sounds kind of weird, huh?"

Dean almost felt a bit of pity for the kid. She must have been raised like a solider first and foremost. He couldn't fathom how his father could put a girl though such vigorous training in order to live a life of doing this dangerous work. It left a bad taste in his mouth.

The bathroom door opened, and the kid skipped out, still smiling but now dressed in bright pink pajamas that looked like a unicorn exploded on them. Going over to her suitcase, she opened it up and pulled out a sleeping bag. Dean and Sam watched her curiously as she spread it out on the motel room floor.

"Alexandra, what are you doing? Don't you want to sleep in a bed?" Sam asked curiously. There were two rather large beds in the room. Surely the little kid didn't need to sleep on the floor.

"Oh, you guys can just call me Lexi," she said with a smile. "And I'm used to sleeping in a sleeping bag. My mom and I travelled often, and we'd usually just sleep in the truck. You guys can take the beds."

Putting her pillow at the head of the sleeping bag, she crawled in and yawned widely. "Thank you for letting me stay," she said, the tiredness seeping into her voice.

"No problem, Lexi," Sam replied, smiling softly. He still felt funny about letting her sleep on the floor, but as he watched her curl up under the top cover of the sleeping bag, he decided to let it slide tonight.

"Well, today's been weird, so I'm gonna crash too," Dean said as he flopped down face first on the bed. Sam shook his head and smiled. Things were going to be different now.