Victoria grace was.. unclaimed , for anyone’s knowledge. But she wasn’t. Zeus stopped having children many eons ago. Which meant his only child currently alive and strong, who was also his favorite , and the one he helped grow up, was Victoria. But no one knew. Except Zeus… and Nico di Angelo , and of course Victoria. Nico felt the surge after the most powerful child of Zeus got claimed. Victoria received the master bolt as her weapon. Yes , THE master bolt of Zeus.