Call of the Nightmares

I walked deeper into the darkness, trembling with fear. My heart beat loud enough to wake anyone, but my feet drove me on. It was I cave, I think, though I don't remember the beginning of the dream. Yes, I was aware it was a dream. I made my own decisions, but could not influence anything else. I've had these dreams for a while now, I think.
I stopped, looking back. The tiny circle of light, half as big as a dime, that showed the exit to the cave was calling.
Go on.
That voice. I've heard it before. It had told be to go into the cave in the first place. I forced myself to look away from the light, unable to disobey the voice. I went on, my heart going ninety to nothing.
Suddenly I felt wind on my face. A tiny light. Floating. A huge chamber.
Medina, the wind whispered. A knife. A huge sharp blade. Flying. Toward me.

I sat up in bed screaming. My parents and little sister rushed in. My twin and older brother were a little slower.
" Medina!" Mom ran to hug me.
Dad yawned and went to comfort Katey, who had started crying. Sara Lee, my twin, sat beside me.
" Nightmare," I whispered.
" Again?" Frey groaned. He stomped out and we heard the thud of him slamming onto his bed.
Mom pursed her lips. " It's the twelfth time, Medina. And you're sure you don't remember it?"
I shook my head.
" Any of it?" she asked again.
" Mom, you ask this every night," I groaned.
" Honey, I'm trying to help," she sounded worried. " So you still don't remember, do you?"
I shook my head. I felt bad lieing to my mom.