Can you possibly get a few wraps of Vet-wrap around it for a couple of days? I know it's lower on their chest and it may not cover it or even stay. How about a baby t-shirt that will keep her from clawing it.
Is she pecking at it or using her foot?
While I agree that surgery by a vet is preferred and ideal, there are few folks who can afford a $250 - $500 bill for a "surgery" by a vet....if you can find one that will perform it on a bird.
The only other option is euthanizing and is why I suggested attempting the surgery as a last...
I would give it a few more days if she seem to be feeling well otherwise. Continue to massage it several times per day and I would continue to give her small pieces of bread soaked in olive oil. If the bottom is getting softer you may be making progress.
The surgery is very simple. You can...