So here's the beginning I started with, more or less. Note the somewhat stilted narrative.
The vampire was more ravenous than she had ever been. The hunger ate its way through her stomach and up her trachea as if what blood still in her had become acid and was melting her body to find a way out.
She bit, fed and soon after loathed herself for her weakness.
She was in a small room with soft colors and a little white dresser. In the corner was a red, race car bed. The air smelled of citrus fabric softener and baby powder. Neither was enough to cover up the meaty tang which soaked the air. In her arms lay a little body dressed in pajamas and with his limp head resting against her chest so that as she moved his wispy blond hair fluttered. The little planes on his pajama shirt were flying in a red sky. She could see that lower down the sky was blue. The red was his blood, still dripping from his neck.
She ripped a bit of blanket off and pressed it up against his neck. There was still time to fix this. She concentrated and began to rub.