UPDATE:
I haven't seen the dog in almost 3 days now but the last time I saw her she was carrying the leg and not putting "any" weight on it. I have been putting food out along with anti-biotics in a cheese ball but I'm afraid that another critter is getting the benefit of that lately. I blocked off her access underneath my rear deck and that probably caused her to move on and try to find another protected area to curl up in. The Vet said the best way to get her healed was to find someone with a humane trap, catch her and then haul her and the cage to a Vet, but I couldn't afford to do that. Wish I could have done more but her fear of almost anything severely limited my ability. Thanks again for everyone's concern, comments and advice.