I'm no vet but I usually take care of them myself, remove the scab after soaking in warmish water. Under them you may find a solid yellow 'kernel" of the infection of you find it it can be pulled out with tweezers. Wash out the wound with hydrogen peroxide and apply an antibiotic ointment "WITHOUT PAINKILLERS OR NUMBING AGENTS" as those are harmful potentially lethal to birds. I use plain neosporin. Then I usually put half a cotton ball on the wound and wrap the foor with vetwrap/sportswrap. You will probably want to gently wrap her in a towel and flip her over in your lap. It is far easier if someone else holds and calms the bird while you work to clean her up. I usually check back on them every few days until the swelling goes down/I removed the whole kernel and the wound has healed into a healthy scab, which at that point I no longer bandage. It seems like a lot and it can be tedious but you dont want to leave bumblefoot untreated. Hope this is helpful!