My dogs got into a fight, and one got a puncture wound, what do I do?

Don't fuss at someone for stating the obvious. If you cannot afford these animals, and afford them a modicum of vet care, then you should find them homes where they can get the help they need. I suggest finding them all separate homes. However, for the time being... you HAVE to get that baby to the vet. Who cares what the mother says. It's not her dog. You said you were going to the vet tomorrow... Until you get there, there's nothing you can really do... Keep a warm compress on it so that infection drains out. Don't try to keep it from bleeding or draining... dog mouths have a TON of bacteria, and the real danger is keeping the infection out. Rub some Neosporin into the wound, and keep it clean.