A/N: I don't really have anything to say about this one… It is set during the holidays.

Lily was late home, in fact she had completely missed curfew. She snuck into the house at half past ten, and was relieved to find her parents had, in fact, gone to bed. Lily felt a wave of relief wash over her as she climbed the stairs to her bedroom.

"You're late." Lily jumped at the sound of Petunia's voice, she hadn't even turned on the light. When she did Petunia was sitting on her bed, lips pursed and arms crossed.

"Only a little," Lily laughed closing the door and removing her shawl.

"You are supposed to be home at ten," Petunia snapped. Lily just laughed in response and sat at her desk.

"So?" she asked crossing her arms across her chest as well.

"You were with that stupid Severus boy, weren't you?" Petunia asked making Lily blush crimson.

"Yes," she said looking away from Petunia and towards the dark window.

"He is a bad influence," Petunia snapped.

"You wouldn't know what a bad influence even means," Lily retorted snapping her gaze back to Petunia.

"You are going to get into trouble," Petunia added choosing to ignore the last comment.

"Good, then you can be the great wonderful daughter you so hope to be," Lily snapped with acid lacing her words.

"I will have you know, I am not interested in such nonsense," Petunia said averting her gaze.

"Right," Lily said standing up. "Whatever you say," she added opening the door and requesting that Petunia leave.

"You are going to get yourself killed at the rate you are going," Petunia said not leaving the bed, she had always been good at out suborning her sister.

"Is that a threat?" Lily asked defensively.

"No," Petunia shrugged but her words were aggressive. "Just an observation."

"Well I would appreciate if you and your observations left the room," Lily said. "Now," she added angrily when Petunia didn't move.

"What do you plan to do, dear sister?" Petunia asked making herself comfortable.

"I could hex you," Lily said looking at her wand on the desk. Petunia lost colour in her face but kept her lips pursed and arms crossed.

"You wouldn't," she said looking at the desk to. Suddenly they were both lunging at the desk and when they failed to grab the wand, which rolled onto the floor, they went for each other. Lily grabbed a clump of Petunia's hair while Petunia pulled angrily at Lily's limbs.

"Get off me you cow," Lily snapped trying to pull away as Petunia grabbed her shirt and pulled her back in order to slap her. In response Lily bit her arm making Petunia scream. Suddenly they were both getting pulled apart by their parents who were both bleary eyed and looked confused.

"What is going on?" their father asked looking between the two.

"Lily was late home."

"Petunia was threatening me."

Both of their parents stared between their two daughters, who used to be the best of friends.

"You are sisters, please don't fight," their mother said soothingly. Petunia untangled herself from her father's grip with anger and started walking down the hall.

"I don't have a sister," she yelled before slamming her door. Lily pulled away from her mother and entered the threshold of her room.

"Neither do I," she screamed before slamming her own door. All their parents could do was stand on the other side of the door and hope that this was just a phase.

For Hogwarts Online Astronomy – Write about a fight of some sort

For Mega Marauders Challenge – List #5: #3 During the summer or one of the school breaks Lily and Petunia have an all-out war

For If You Dare Challenge – Sister Act

For Character Trait Boot Camp - #38 Stubborn!

For Ten Times Ten Challenge – List #5: #1 Jealousy