Oliver found it!
Oliver had been searching all night and ordered many of his messengers so that they could find traces of where Marsha or Alsava, who was his biological daughter, was. After visiting his father-in-law's house who was the parent of his late wife, Oliver immediately rushed and took action to find all information related to Marsha and Alsava at that time. Oliver wasn't the least bit desperate because it was very difficult for him to get information about the whereabouts of Marsha and Alsava. Until a few hours later, he managed to find his whereabouts from his messengers and Oliver also confirmed that Marsha and Alsava were indeed there.