Gonzo is a SUPER picky dog. I started him on pre-made Raw (Steve's Real Food... it comes in tiny little cubes), and after a couple of weeks of that he dove right into raw meaty bones.
Are you using chicken? It could help to start with game hen, since the bones are much smaller. You could sear each side very, very lightly, and it usually helps if you hold it at first, and encourage her to "get it". It could take a while for her to develop a "taste" for raw, after never experiencing it. Gonzo was like that. I started Fozzie when he was 9 weeks, though, and he could not have been more gungho about it! ; )