Thank you so much for all the informative replies. When i looked at Zsa Zsa's foot last night, the wound had sealed over. But she is still in distress when trying to walk. i put more blu-kote on it and let her sleep with her buddies. i made sure the coop had plenty of clean, dry hay. Although many of you are saying how easy it is to cut the infection out, i am feeling quite nervous about it. Not looking forward to a big vet bill, but i really trust my vet. She's experienced with poultry and waterfowl, as she has them herself. i just don't want to make things worse. i do have Baytril and Tylan, but don't want to start a course of antibiotics then have my vet tell me there is something else that would be better to use. So i'll have to just keep treating the wound with the blu-kote until Tuesday.
i do think i need to get her inside today, though. i can see it pains her to walk, and i can't stop her from wanting to keep up with her buddies. i may have to take over one of our bathrooms, or build a large crate so she has a little room to move. i can also continue the metacam. i have it on hand from a prescription for another one of my ducks, so know i have a safe dosage. My vet said that ducks are very sensitive to pain, much more so than chickens or other animals.
i did look on the indoor ducks site. i'm their friend on Facebook, too. It looks like Nettie has some health problems and that an order can take 3-4 weeks to fill. i may put an order in nonetheless for a pair of shoes, so i will have them here if needed in the future. Not sure i will get them in time for this situation.
It also sounds like this will take some time to heal. So i may have an indoor duck for a while. Maybe i should order some diapers from Nettie, too? Anyhow, i will let everyone know how things go.