Ninja skills and little girls
She was accustomed to all things that came her way. Her father had trained her as early as she could remember, and he was relentless. She trained until her arms felt like ten-ton weights, her bones on the verge of snapping, her knuckles and heels bloodied and battered and her body on the verge of shutting itself down completely. Despite her toothpick-thin appearance she could easily snap the neck of a man who stood at six foot and lift three times her weight. Her physical prowess wasn't the only thing to marvel at. Her upbringing had forced her to think on the fly.
By her eighth birthday she could outwit the majority of the local high school's Chess Club and out read the entire graduating junior class. Her superiors praised her as a genius and her peers both respected and envied her abilities. It first started out as simple exercises, cardboard cut-outs, archery targets and sand-stuffed dummies. However, it was plain to see that her skills were far beyond her years. She began sparring at ten and became reigning close-combat champ of her father's school a year later; the only person she failed to defeat was her father.
Her father also introduced her to the complex art of medicine and toxicology. She began absorbing the vast amount of knowledge involving mixing antidotes, creating deadly weapons, and identifying which species (plant or animal) contained the venom or chemical that could nullify or strengthen the effect of an elixir. She learned how to milk snakes and spiders, identify and prepare leaves, berries, and roots, and create and conceal various blades and darts coated in her creations, nasty bits that could leave an assailant paralyzed or left for dead in a matter of minutes.
Add espionage, stealth, trap setting, and camouflage skills to the rest of the list and you have the world's youngest ninja prodigy ever to walk-and her name is Janine.