"Mine" (yandere hp x Princess reader

queen Celestia and King albert had a lot of children.
by a lot i mean a LOT and you were one of them. you were the Godess of the dead,shadows,night and moons. people haved forgoten you and your family...all but one a girl named lilly Potter. her family adord princesa y/n. one day you decide to pay her vistet were you meet her son and her Husband lilly asked you if you can proted her son...
what will you choose?