You really have made great progress with Gracie. Really, give yourself some credit! I would add, for your consideration, to help with the biting problem, do not give Gracie an opportunity to have to choose. Does that make sense? Just like Dan said, toss the ball and do not offer your fingers. If you give Gracie better choices then she won't have the opportunity to mess up. Also, I always think it is a bad idea if they even start to make biting an automatic response. Meaning that, I think it becomes a habit or the pathways in the brain become ingrained. Better to never start the habit than to try to straighten it out later. Gracie is not alone in being willful. Greys are that way by nature, it does not work to attempt to dominate them. That being said, later you CAN direct them with "no" because they respect you and love you. My guy WILL NOT step up sometimes, and there is nothing I can do to force it. Once I offer my hand and he responds with an immediate lowering of his head, it is game over. To caveat this, though, over time those situations have become less and he rarely bites or attempts to bite anymore. Please keep up the good work.