The Fallen Crown: Princess's Vengeance

When a coup led by the regent Valos wipes out her entire family, Princess Elaina of Vireland is left for dead. She survives, however, and is secretly raised in hiding. The clipped premise sets up a young royal who must carry the memory of her slaughtered kin into a kingdom now ruled by the man who destroyed it. Her quiet years in concealment become the foundation for a long-awaited reckoning.