The Little Jinx is a Lucky Star

Abandoned for her strange gift of being a jinx, a little girl is taken in by a wealthy family—and quickly proves to be their greatest blessing. She heals the ailing matriarch, revives withered plants, uncovers a cursed artifact, saves her new brother's legs, and exposes a crooked merchant. When her whispered "bad guys will get what they deserve" causes a chandelier to fall on a swindler, the family celebrates with a grand feast, and the girl once seen as a curse is adored by the whole household.