I don’t see any signs of bumblefoot, but her toes are pretty fat. If they seem lumpy that could be a sign of gout. Brahmas are pretty hefty birds, so it may be normal fat toes. I would keep applying the scaly leg mite treatment 2-3 days a week. No need to wrap the legs. Nustock horse cream found...
Pictures are helpful to know if it may be bumblefoot, gout, joint infection or something else. Is it just in one foot or both? Get a picture of the foot and toes.
Pictures may help. Soaking her feet in warm Epsom salts for about 15 minutes a day can help to loose a bumblefoot scab, in order to squeeze out any pus. Leg mites can be treated by slathering something like Nustock cream on the legs or vaseline 2-3 times a week for several weeks.
Videos are best uploaded to a site such as YouTube or Vimeo, or similar. Here is an informative article including signs of egg yolk peritonitis:
https://www.chickenvet.co.uk/egg-peritonitis
Does she lay eggs anymore? Walking upright and like a duck can be a description of chickens with internal laying or egg yolk peritonitis. I would check to see if she is egg bound though. If you feel a stuck egg, human calcium citrate with vitamin d can help to increase muscle contractions.