Niklaus Mikaelson faked his sisters death. Ingrid was his only full sibling and he wished to protect her more than anything. So when Mikael almost killed her he faked her death. She watched her family from the shadows for centuries. Now that Mikael is dead she can return to her family. But after all, this is the Mikaelsons, how long can the family reunion last. This story doesn't follow the storyline of the originals.