I just have to jump in and add, while getting a sewing machine for "heavy" fabrics is really sweet, how many "jeans" quilts is she likely to make? If her first quilt had been more standard, she might like a different kind of quilt. Also, as this is her first, she just may decide she isn't really a quilter after all. Maybe you should consider waiting a bit, maybe for Christmas, if she still has the bug. One last comment, does it really have to be a surprise. Quilting is very personal, it might work out better if she had the opportunity to sit at a few machines to see if they fit her physically.