Thank you all so much for your kind words of encouragement and advice. Maggie has finally resumed her "normal" body functions and is feeling sooooo much better. The vet cannot continue heartworm treatment at this time because her liver is so affected. He also wants to wait for any new meds or anything else until she is healthier. She still eats and drinks very little in my view, but I'm sure it is a great deal for her.
I gave her a warm bath today and then she went out with my daughter. She "went" immediately and several times thereafter and then started jumping up and down. She's been on the uphill ever since. I am so happy that she is feeling better. I know we are not out of the woods, but I'm so pleased that she is better. I feel better knowing she has a chance.
I think I have done all I can here about the breeder. They are "shut down" for all intents and purposes. We live in such a small town that reporting to the vet takes care of the "needed" things. He gets involved in the larger animals too (like the horses that were so sick looking) and takes the initiative to do the right thing. I know he was instrumental in helping a really sick horse that I reported about 10 years ago. That was my only report before and I'm not even sure if they were able to save the poor thing, but at least something was done and the owners were prosecuted.
Again, thank you all for your advice for poor Maggie and I have used so much of it that you guys have helped her pull through. I knew you would be there when I needed you and, as always, you were!
I can't thank you enough!