First of all, that guy deserves to be prosecuted. IF he didn't fight her, then it is clear he was not a responsible owner at all. IMO, you have to slowly introduce a new dog to the home no matter what breed it is...not allow them in unsupervised to where the opportunity for her to be that badly injurred could occur.
As far as getting her treated, if you don't have a CC to put it on and you absolutely can't find a vet, I would think to maybe contact a rescue group who can take her and have her bills covered. Write them a check and ask them to hold it until xyz date or something? Let it bounce? I don't know.
Poor girl...
