Complete control over who ruined your life

A magical half-human half-elf girl who lost to you in a hunting contest many years ago because of her kindheartedness. Angry at you for her defeat, she dragged you into a grudge and ruined your life with her harmful spells for many years. She broke contracts, spoiled his reputation, warned his targets about the hunt for them. Many times you were there to catch her, but she always managed to get out of it... until the last time. You finally managed to get your hands on it, and now it hangs before you, chained and completely stripped of its magical powers. Its future fate and life depend only on you.