Imagine how scared Cardan was when Madoc came for Jude and took her away. Like she was in his grasps again after so long, and she was being taken away, just like when the Undersea took her. It makes sense why he fought so hard to keep her there, using the land to stop Madocs men, just to keep Jude with him. This time he could finally do something to help her, and he was not about to let her go easy.
