I would suggest getting her the Al Berard DVD on cajun fiddling. He plays in standard tuning and explains the waltz and two step bow licks as well as double stops on seconding. He then teaches a couple of tunes which are the equivalent of Dirk Powell's tunes in the cajun accordion series. It's enough to get a violinist started on the road to play cajun fiddle. Once she gets the feel have her listen to Steve Riley's version of Oh Ma. She should be able to pick right up on that. Then stick her on stage in front of a mic.