The Evil Within

I lay on the floor of my apartment, groaning in agony. There's an excruciating pain in my stomach, and it keeps getting stronger. I remember what the old man said before, "There's an evil inside you, girl. The demon is coming. It will be let loose soon. May god have mercy." I should have done more than skimmed the books on demonology he loaned me, and heeded his warnings. 

As the demon inside tries to break out, the pain i've been having in my gut is only intensified by razor sharp claws. My stomach begins to tear, blood spills onto the floor, and I collapse in agony and terror.
I hear her wail in frustration as I try to stop her. I feel I must not unleash a monster on the world, but my attempts are futile. She has been bottled up for far too long, and is more powerful than I.
I grow too weak to stall her any longer, my arms fall to my sides. I watch her climb out, stand, and wipe my blood from her glistening body. As I lie on the floor, torn apart, and losing too much blood, I gaze up at her. Tall, slender, and beautiful she is. Hair like melted chocolate streaming down her back in subtle waves; rich and dark. Her eyes are the color of whiskey, with an evil glint, a mischievous smirk is upon her heart-shaped face.

"How can this be?" I ask of her.

"Haven't you figured it out by now? I am a part of you. I am the feelings of rage, hate, and self-loathing that you have repressed all these years, and you had quite a lot of them. Each time you buried one of those emotions, I grew a little more. "she laughed, "Now is the time for me to do what I was meant to."

"And just what is that?" I ask. I'm feeling faint from blood loss and I know I won't survive much longer.

"What?!" She laughed again, "Think, my dear. Your rage, hatred and despair powers me, created me, and makes me invincible. I am powered by that, and that alone. What I want to do, what I am meant to do, is kill. I'm going to kill everyone, and everything you've ever loved, or held close to your heart. And after that? Who knows! Your world has so many options for someone like me." 

She bends down with a smile upon her full lips, kisses me on my forehead, turns, then walks away, leaving me to die on the floor, and powerless to do anything to stop her.