I can see some pinkness and maybe some swelling and loss of scale detail ...a little it is bigger pic , still a little hard to tell. I think they look like sore feet .. with a new one with maybe not so great background a vet check is always a good idea .
You can get a spray bottle, and add a few drops of betadine to water for a light tea color , and spray bottom of feet. It does stain. But is helpful for minor wounds and safe to leave on skin .
Offer maybe a rope perch that is softer . Having different perch options and diameter..the natural perch pictured is fine and a nice option . And of course , when she isn't always on bars will help
The nails look so yellow and feet so orange , I'm not sure what IRN of this mutation feet and nails should look like ....you can Google and look at others with her colors and compare . You aren't supplement her with vitamins are you ? Liver issues can make skin look yellow too, can you show her face ? Is urine bright yellow or bright green ?
It's a lot when you take in a new one. A bigger a bigger cage make her feel more comfortable , more options to retreat and not feel trapped. Almost all of mine are used but excellent condition no rust cages I found cheap with looking..
Diet is important, but I like to offer veggies, while still keeping whatever they ate at first . Going more slow with diet changes , not forcing. What does she eat now ?