Poor little thing. A sling is a very good idea, but I would still get her on vitamins to see if those help.So, an update from a day of observing Angel. So, after taking the brace off, she stopped rolling onto her back as often. However, I have observed that she does not have a twisted neck. Though, I found the reason that she ends up on her back is because of when she tries to walk. She pushes up to try to stand, but due to what I can only assume is weak legs, she ends up falling onto her back and not being able to flip back over. She lays with her legs straight out behind her or straight in front of her. I built her a sling and put her in it, but she can't walk on her own.