Mary Trump appeared on CNN last night to talk with Don Lemon about her uncle’s flailing reelection campaign, his increasingly erratic behavior, and his terrible dancing skills.Asked how Donald Trump might react if he loses his reelection bid, Mary Trump said it will be a “rough ride” for the nation but especially for her uncle.“He’s not going to take it well,” she said. “Losing is not an acceptable thing in my family.”“My grandfather set his business up and his family up as a zero-sum game, and that meant only one person could win and everybody else needed to lose, and in order to win, Donald was trained to do whatever it took, whether it was lying, cheating, or stealing.”Mary Trump on @donlemon was an entire mood tonight.