showbiz icon for more than eight decades died at the age of 99 on Dec. 31.To commemorate what would have been White’s milestone birthday, her “The Mary Tyler Show” co-star Joyce Bulifant is looking back fondly on her time working with America’s eternal golden girl in the 1970s.“We all felt that Betty was going to live forever,” Bulifant, 84, told Fox News. “But she will live forever in all of our hearts because wherever she went, she just made you feel fun and joyous.”Bulifant played Marie Slaughter, the wife of news writer Murray Slaughter (Gavin MacLeod), on the sitcom.