Dog clippers work well with their nails, but just like dogs, you have to be careful not to cut the quick. It will bleed, alot. And I have noticed you don't have to cut far at all to start it bleeding, so I would be very careful and just cut a bit at a time. Those auto rotating nail files they make for dogs and cats are better and are what I use when wanting to trim them.
You can do the epsom salt soakings and use the draw out salve on her other foot. Just keep the other foot out of the water. The bird can walk quite well with bandages on both feet. Mine have. What the soakings will do, along with the poultice, is soften the black scab and pull the infection closer to the surface. So, when you are ready to work on that foot, it will be so much easier. You should be able to loosen the edges of the black scab much easier and pull or lift it off. I rarely have had to dig deep into a birds foot when treating this. If I don't find anything after a few probes in the foot, I leave it alone, medicate it and bandage it up. Or, use the poultice on it again for a few days to draw out any infection I can't find. So, you will probably help your hens other foot and prevent the spread of the infection further into the foot if you at least start on soakings and apply that poultice while waiting for the other foot to heal. Just slap the poultice over the foot pad, and put a guaze pad on it and wrap it up like the other foot. Change it every couple of days also.
Glad to hear her other foot is healing well.
