QUOTE(Czerny @ Aug 30 2011, 10:04 AM)

I'm quite sure you can cover the same technique/s, and certainly the same keys, using repertoire that isn't fiddle music and I think that would be the best approach for the moment. In addition, make sure she understands your rationale; that skipping work in a tutor book potentially means skipping specific techniques, not just skipping particular "tunes".
Yes, I agree with this. There's so much music out there for violin, it should be easy enough to find something that doesn't include fiddle tunes, and if your student is going to feel happier with that, I think that's the way to go. But I wouldn't discourage her from bringing along pieces she'd like to learn, as long as she is prepared to accept that some of them will not be attainable for her yet, and she can return to them later, further down the line.
It can be difficult to guage gaps in technique when you take on a new student who has learnt elsewhere. When I have done this, I have tended to mix and match pieces / styles / techniques / books so they get a smattering of everthing, and that usually gives us a place to start from, and also gives me an idea of the kind of music they are going to enjoy playing. (I loan out books for this purpose, so they don't need to take out a bank loan!)
I once took along a piece of music to my piano lesson, which I thought was the height of wonderful piano writing. At the time, it was a little beyond my standard, but my teacher said that students will often work that bit harder at something they are desperate to learn, and let me learn it (which I did). Our job, as teachers, is to differentiate between what we think pupils can (sometimes with a push) learn, and what is simply going to end us as too much of a struggle and - ultimately - be discouraging. At least your lady has looked into music, and is willing to buy it, so - gently guided by suggestions from you - I'm sure you will manage to find something that
she wants to play, and that
you feel will fill in gaps in technique. Good luck!