I'm sorry, but I can't not say this: Do you really expect us to believe that you wouldn't have noticed something like that? And what was your brother doing holding the snake in the vehicle on the way home? You may not have known this being a new BP owner, but moving can be a very stressful time for snakes. As a result, they should be left alone as much as is possible within the the first week or two of having them. As for the snake, it is pretty clear that she had a pretty severe injury to her spine, and as much as it sucks she will likely need to be euthanized. I hope that is not the case but I am a realist. While I hope for the best in any situation I like to prepare myself for the worst. Best of luck and keep us updated on her.