The High King, in his rising jealousy, began to apply a pressure. It was childishly done, pathetically, and the realm was their audience to it. He gave dictates, that the Treeant King was forced to acknowledge, despite his disgust, for fear of the war that would inevitably follow it. The High King's solution was a lacking freedom. He created his reasons, and he had Persephone brought to the Capital permanently, and moved into quarters that he could keep a watch on her. In the process, he practically killed all chances he had of having the Treeant King agree to have her married.
He used the fullest amount of his influence, merely to exert that degree of control, but it became clear to all that his desires of marrying the fair Persephone was never likely to be, no matter how much he dug his claws into her, or forced her to sit in his company.
