Chris

I think that its the same case as kate not letter herself believe anything but what she wants to hear. He is having the same problem with the idea of the man who made him the person he is today being guilty for such a heinous crime towards something that chris lived and fought for. He repressed the very thought of his father being a guilty man.

kate

I think deep down she knew but she was in a deep depression and denial because she can not except the fact that he died. She refuses to let her self believe that he is dead. It seems at first she is not really that bad about it but as the story progresses she seems to get worse and worse and crazier about the whole subject.