Here's a list a bunch of Austrian quilt bloggers. I'm sure by reading or contacting them she should be able to the lowdown.
http://quiltinggallery.com/quilting-.../c/14/austria/
That said, my German, Romanian, Brit and Israeli friends buy the majority of their fabric online from US sites and eBay sellers, and have it shipped to me. They take advantage of the low/free shipping offers. I then consolidate it and ship it on to them. ;-). They save a ton on shipping.