Where are you located? (state/country)
You mention that you thought the feet were initially swelling because she was being picked on(?) I do see some slight places on the feet that might be from pecking, scuffles or ? Those places don't really look that severe and I would expect to see those parts swollen like a bubble. They could still be an entry way to infection.
If at all possible, seek vet care, she probably needs medication, but you need to know the cause so get the correct thing.
If you place her in a sling, I would be tempted to keep the feet unwrapped for several hours a day.
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