Belle, you're missing the subtleties of Diane Keaton's acting the part of Kay. Remember when they were dancing at Anthony's communion and she brought up the subject of the Conrleone family's becoming legitimate? Remember the look of near comtempt she gave Michael after the attempted assasination when she was sitting on the couch with kids and he was walking around behind? Then, watch her closely at the Senate hearing - you can tell that she is very unsettled and that something is brewing in her mind.