*This takes place somewhere between season seven and eight. There's no specific point on which it fits into the show's timeline, and I'm putting Blake on the team*
Lara Trenton was fifteen years old when her entire world changed.
She was walking home from school on a Wednesday afternoon. Her father had forgotten to pick her up, and so she'd decided to walk instead of attempting to call and risk angering him. But as soon as she unlocked the front door and stepped inside of the house, she knew something was horribly wrong. To this day, she still wasn't sure what exactly had set her off. Perhaps it was the unusual quiet of the house. Perhaps it was some sort of primal instinct, warning her of danger to come, but she knew something wasn't right.
"Dad?" She called into the empty house. Setting down her book bag beside the door, she cautiously treaded into the family room, where he could normally be found lounging in the armchair, watching television with a bottle of beer in hand. He wasn't there.
"Dad, where are you?" She called again, and again she received no response. But then she heard a loud crash coming from outside. The sudden noise made her jump, and she quickly ran out the back door.
Another crash, and a shout that was quickly muffled. Lara realized the noises were coming from the cellar, and started to the doors. Prying them open, she recognized one of the voices shouting as her father's. She carefully navigated the steps down into the cellar.
The smell hit her almost immediately. The stench of urine, blood, and feces, and she could hear people crying softly. Above her, the doors slammed closed, startling her and drawing the attention of those who had been causing all the ruckus.
"...Dad?" Lara called again, gently.
She turned the corner then, and she saw him. He was holding an axe, and at his feet a woman was quivering, crying and covered in dirt and blood. Heart pounding, Lara looked back up at her father and saw the inhuman glint in his eyes. He was furious, and Lara knew it was because of her.
"Come here." He spat. When at first she didn't obey him, he shouted, "Now, Lara!"
Lara forced herself to stumble forward, and tripped over her feet in the process. Her father grabbed her arm roughly before she hit the concrete, glaring down at her. He let go abruptly, and she fell down next to the crying woman.
"Dad--"
"Shut up! Shut the hell up!" He hoisted the axe, and Lara threw up her hands in defense. It wouldn't have been the first time her father had beat her, but she'd never seen him so angry. She was terrified he was actually going to kill her, right then and there.
Instead, he lowered the axe, his eyes glinting murderously in the dim, flickering lights. "Nosy little bitch...you should've just minded your own damn business, then maybe it wouldn't have come to this."
He turned the flat of the blade to her, and slammed it against the side of her head. Lara crumpled back down to the floor, her vision blurring as she began to lose consciousness. But before that happened, she bore witness to the sight that would haunt her for the rest of her life. She watched as her father lifted up the axe once more, and brought it down onto the crying woman's neck, completely severing her head from her body.