VAIL -- A former bank teller robbed at gunpoint by a pair of Australian snowboarders here five years ago says she feels violated all over again by a book written by one of the so-called “Dumb and Dumber” bank robbers. “It made me feel incredibly violated and disrespected,” Jessica Gunther said of Anthony Prince’s new book, Bank Robbery for Beginners. “I feel almost like I did the day it happened ... as if my own progress has been undone.”