This short story has major spoilers to The Virus Within. Please do not read onwards if you have not read it.
Also, this has mentions of depression and suicide. If you cry, it's working.

I stared in horror even as my nose confirmed it. Jess, my sweet innocent sister, had turned. Memories of her light laughter and gentle teasing flashed through my mind.

Her bloody, tattered jacket showed bite marks on her arm, and several scratches across her chest. It had clearly been painful - and recent.

She wasn't in control - her scent was missing the subtle undertone that came with using human soaps. Maybe I could still save her... All sounds other than her ragged breathing drowned out as I silently approached her.

I stopped in my tracks as I caught the smell of animal flesh on her breath. Grief permeated through my soul, causing physical pain in my chest.

*     *     *

I quickly retreated - nay, fled to a nearby house, and curled into a ball. My instincts bristled at my retreating from the lower ranking Runner, but I couldn't care less. What was the point anymore? Dry sobs wracked my body, and I drew my knife.