[RosCole]

I am so sorry you are going through this. This certainly is a sad, very hard situation. I believe that Nubi deserves a second chance and can be rehabilitated but as you said, you need all hands on deck for this one.
If it is beyond your capacity (it is A LOT to take on), maybe you can find someone who will be able to devote all of their time to her. Sounds like it might take her being the only dog so that all attention is on her.

It angers me to think what happened to this poor girl to make her the way she is.

I don't have much to offer here except prayers and postive thougths for a solution.