I was hoping to have a conversation in real time because you were logged in, but you didn't see my comment and logged out.
'Gout occurs when there is too much uric acid in the bird's body. Uric acid is regularly produced in the liver and excreted through the kidneys into the urine. However, birds with impaired renal function may not be able to get rid of uric acid as efficiently, leading to a build up within the blood which is called hyperuricemia. Hyperuricemia can result in uric acid deposits within the joints (articular gout) and in visceral organs or other extra-visceral sites (visceral gout). Over time, these deposits will grow to form tophi (nodular masses of uric acid crystals).'
http://www.poultrydvm.com/condition/gout
What could have impaired her kidney function? Possible, but not very probable: too much protein in the diet. More likely: too much calcium, if she's been eating layer, without laying daily. Layer feed has 400% the amount of calcium of 'all flock' feed and it's designed for hens who lay (more or less) daily. There are other possible causes, please look them up at the link.
What could be done for her: ensuring that she doesn't get excess dietary calcium, by offering all-flock and
free choice oyster shell or egg shell. (Maybe this is what you've actually been doing. Then maybe the cause of the gout was too little vit A or too much protein, etc)
What else could be done: offering something rich in beta-carotene every day and offering cherries.
Why cherries are important:
https://nutritionfacts.org/video/gout-treatment-with-a-cherry-on-top/
Please see here the least stressful (for both owner and chicken) method of treating bumblefoot:
https://www.backyardchickens.com/threads/foot-cyst-bumble-foot.1307930/#post-21316575 post #3