At this time James did not attack the vampire kingdom, because indeed the vampire kingdom was not proven guilty of kidnapping Princess Olivia, it was proven that at this time their beloved beautiful daughter was already with them in the kingdom.
Even though James doubted that their beloved daughter could easily survive the clutches of someone who had previously kidnapped her and it was also impossible for this beloved daughter to come to this land of no facts herself, whereas previously Olivia only knew about being on earth, but after smelling the scent of a wolf from his daughter's property which at this time was also growing so that made James sure that at this time his daughter certainly had extraordinary abilities, just like himself and also Savira who was a King and Queen Wolf whose strength, of course, could not be underestimated.