Title: Hogwarts' Worst Nightmare

Author: Khaosqueen

Rating: PG-13

Summary: Snape's daughter (yes daughter – dun dun dun!) is to move from America to England and live at Hogwarts and get to know the father she has never met. Harry and his friends are surely bound to have an interesting 6th year at Hogwarts.

Disclaimer: I own none of the characters with the exception of a few unimportant characters, Demi, her mother, and possibly others.

A/N: Hey all this is my first Harry Potter fic, so bear with me, and yes I have read the books- so there should be no canon issues. The way this fic got started was when I thought about the fact that J.K. Rowling has given us little background on Snape. Any and all suggestions/reviews/CONSTRUCTIVE criticism is welcome. R&R so I know people want to know more! So here is the first chapter…

'thoughts' indicates either a change of scene, time change, or POV change

Chapter 1: An Interesting Encounter

The short blast of a horn sounded throughout Platform 9 ¾ and all students started to head for the Hogwarts Express as parents and younger siblings bid all students to have a good year. There was one girl who had no family present and tried her best to drag all her luggage onto the train without asking for assistance. 'I don't even know any of these people. I mean wouldn't they look at me like I'm crazy if I just walked over and asked for help with my luggage because it's too heavy for me? Even if I did ask it would lead to unwanted questions about my non-existent family.'

When she finally managed to get all her luggage onto the train, the girl set to wandering the compartments to find one that she liked – one that was preferably empty. She noticed that a lot of the compartments were already at least half to three-quarters full. She noticed a lot of the girls were catching up on the latest gossip and such, but the boys seemed to have a need to show off whatever they could let it be magical ability, a new pet, new robes, etc. 'Boys… Stupid, brainless, competitive boys.' As she neared the back of the train, Demi finally found an empty compartment. 'Sheesh, you'd think that students would want time alone, but I guess I'm just different from everyone else. They also have known each other for a while where as I'm just a new student.'

Deciding that it would be easier to change now rather than later, Demi pulled her new Hogwarts robes out of her trunk and pulled them on. Once she finished that task she moved onto getting her trunk into the overhead compartment. Finally getting her trunk halfway in, she heard voices on the other side of the door.

"Here is one that's empty, Ron, Hermione."

Ron, Harry, and Hermione had been searching the train for a compartment that they could share for just the three of them, and after having to get on this train for six years just to get to school, they had learned how it worked. Usually a compartment that had people in it was noisy – volume depending on who and how many were inside -, and an empty one was silent. Harry found one that had no noise coming from behind it.

"Here is one, Ron, Hermione." He shouted out to them as he pulled open the door. Just as he walked inside and turned to face the inside of the compartment, his eyes were greeted with the sight of a gorgeous teenage girl who was struggling to get her trunk into the overhead.

"Here lemme help you there," he offered walking over and pushing the trunk back as she lifted it up enough for it to slide back.

"Thanks, ummmm…" she whispered.

"I'm Harry." He replied as he looked over his shoulder and beckoned his friends forward. "And these are my two best friends, Ron and Hermione."

"It's very nice to meet you. I'm Demi, by the way." She replied politely.

"Hello, Demi." Hermione greeted stepping forward. "What House are you in?"

"I don't know yet. I'm new here to Hogwarts."

"Ahhh. I was going to say you couldn't be in Gryffindor, unless you are a first year and-"

"I'm entering my sixth year. Just turned sixteen actually."

"So did I," Harry put in enthusiastically. 'So she's my age. That's interesting. I hope she is placed in Gryffindor.'

"What about you two?" she asked with a frown on her face.

"Well I won't be seventeen till September nineteenth." Hermione answered immediately.

"And I won't be seventeen till March first." Ron supplied.

"Oh, that's not too bad." Demi replied after a moment. 'Well they seem like a friendly and accepting bunch.'

They all sat down as the Hogwarts Express left Platform 9 ¾ and chatted amiably about Quidditch, classes, and summer happenings. Harry and his friends decided it was a good idea to warn Demi about certain classes and teachers and told her which classes and teachers were their favorites. Around 12:30 the food cart entered their compartment.

"Anything off the cart, dears?" the witch asked kindly.

Harry and his friends all bought a little something, but Demi had never seen any of the foods that were on the cart with the exception of Chocolate Frogs. 'I knew I should have eaten more junk food as a kid, but Mom wouldn't allow it. But the food she made for me was a good consolation for my lack of sugar.' Hermione glanced at Demi who was still eyeing the tray a bit suspiciously and asked, "Demi, don't you want anything?"

"Ummmm, I'm not too sure. I never had much junk food as a kid, and I don't know what's good and such."

"Have a chocolate frog or two, some cauldron cakes, and Bertie Botts Every Flavor Beans." Ron suggested with a mouth full of a cauldron cake.

"Okay, umm whatever he just said." Demi mumbled a bit embarrassed about her lack of knowledge about sweets.

As Demi started to eat, she realized she didn't even know what House her friends were in. "So what House are you lot in, and how many are there? What's a good House to be in? Is there even such a thing as a good House and a bad House?"

"Well, the three of us are in Gryffindor, and there are three other houses: Ravenclaw, Hufflepuff, and Slytherin." Harry explained.

"Ravenclaw has intelligent and wise students who are good with wit and eager to learn. Hufflepuff tends to take in those who are patient, loyal, and believe in just actions." Hermione continued off of Harry's explanation.

"Gryffindor houses those who are brave at heart, and Slytherin is a house full of dirty lowlife scumbags who turn out to be-"

"RON!" Hermione reprimanded with a cold glare. "Did it occur to you she might be put in Slytherin? Slytherin is a house made up of those who are cunning and sly."

Demi snickered as quietly as she could as Ron rolled his eyes at Hermione, and Hermione muttered something along the lines of childish. 'No worries, Ron, I have no intent of being put in Slytherin. At least as long as I can help it. Maybe transferring to Hogwarts won't be as bad as I thought it would be.'