Yes notify AC&C. They went out of town with no food, water, shelter for a dog, IN FLORIDA? That should be more than enough for authorities to confiscate the dog. If not, then there is something wrong with the authority given to them!

Poor girl. Please keep trying to help her, you are her only hope.

And as someone said, if you work alone, this just sets them up to inflict their neglect on another dog.