David told the story of being on a road trip with friends when their car had engine trouble. When they went to the nearest house to ask to phone for help, this person opened the door. Her one-time partner and now wife, Jane Wagner, wrote this woman's Tony Award winning show, The Search for Signs of Intelligent Life in the Universe. This woman received a Kennedy Center Honor in 2014, and her film debut in the film Nashville earned her an Oscar nomination. Name this woman who won the 2003 Mark Twain Award for American Comedy.