When she first came to Sodor, she used to be fiesty, arrogant, and very stubborn, and used to be full of her own ideas, and would shunt Toby's trucks where ever she would like, much to Toby's dismay. He tried to reason with her, but she was still being stubborn, until she got in trouble by getting stuck at the Ffarquhar crossing, and Toby thought she can take care of herself, until his driver told him she is supposed to stay in the quarry, so Toby decides it's best to help Mavis after all. After helping her, she is left very embarassed and angry. After being punished by her manager, Mavis is still stubborn and ignores advice, and plans to use the teeniest bit of Toby's line, she'll save herself from this bother, and plans to use the trucks to bump her on Toby's line, but backfires when the