she should at least check for color fastness in the batiks. I have found that they do have a bit of bleeding and you don't want that bleeding into other fabrics. I had a fabric that I just loved, but after washing it 6 times it was still bleeding really really really bad. it is sitting on a shelf waiting for me to get some dye setter stuff (can't remember the name), I can only imagine what would have happened in the quilt it was destined for if i had put it in.