Sarah Gilbert, who plays 65-year-old Barr's on-screen daughter Darlene, and serves as executive producer on the show, is especially fed up, according to the insider. 'The two have been going at it over creative differences, particularly when it comes to political dialogue that is in the script,' the anonymous informant shared. Radar's source said: 'Nothing has changed with her and she is just as difficult now as she was then.' Neither Barr nor Gilbert, 43, has addressed reports of creative differences. Barr did recently address Trump's claims he's to thank for high ratings for the show's premiere, though. Speaking with...