Looks like you may have three issues here......Her toenails badly need trimming. You will have to trim them a little at a time to keep from cutting into the quick. Hold them up to a light and you can see where it starts.....now. The spot is probably bumblefoot. Do a search on here on bumblefoot. Her scales are also a tad raised. It could be from age but could also be scaly leg mites. A dip in vegetable oil every week to 10 days will take care of that.