The Lost Heiress You Don't Touch

A lamp spirit that Nina Warner lets loose by accident owes her one gift, a stick of incense that binds her as sworn kin to anyone she names. She names God. From then on she stands equal to the heavens, and whoever harms her takes three times the harm back. Her birth mother finds her and brings her home. There is no fight over which daughter is the real one. Her younger sister has been bullied by their cousins for years and has gone quiet and slow and frightened of everyone, and her mother has spent those years being talked down to inside her own house. The father is dead, and what he left behind is what the uncles want. Nina tells them she has come back with the strongest backing there is and that nobody touches her mother or her sister again. The uncles and cousins keep at it anyway. One of them goes after her sister and she knocks him across the room. Told to kneel in the ancestral hall and repent, she agrees, and the hall blows up a moment later. The relatives who move on her father's inheritance end up in hospital with years of recovery ahead of them. Nobody in the family raises a hand at the three of them after that.