It was a mistake.

The nightmares she sees constantly in her peripheral vision are the symptom of the flayed parts of her soul. Though she escaped the flames that sought her spirit-life, every hair was singed from the right side of her face.

She remembers that night every time she looks in the mirror.

((This works with all skintones ^.~ If you're going to derive from this, PLEASE do so from this page only.))