Yes, its a balance problem. Same as Baby had. You saw in the video he balanced best on his haunches and when he tried to walk he had to use his wings to propel himself. His little legs were just out of whack but he eventually got better. Give her a chance on the vitamin B. I wish I knew more to suggest but I think it will just take time. For everyone with birds having similar issues, keep in mind that if the bird has been sitting and not moving a lot for an extended period of time, their legs will weaken. It will take time for them to regain their "sea-legs" so to speak. Once Baby began to improve, it still took a least a week for his complete recovery. I was noticing tonight that he still is a little shaky in the legs sometime. Think of humans recovering from temporary paralysis or immobilization, it takes a long time to get back to "normal."