Does she have any lice or mites on her body?
Can't really tell if she's got Scaly Leg mites or not.
Smelling like bad meat with blood doesn't sound very good.
I'm going to tag in
@Eggcessive and
@coach723 as well.
My thoughts are break down of skin and tissue from sitting and from dampness.
Does she roost or does she sleep on the floor?
I'd give the legs a soaking in diluted chlorhexidine. Lightly debride the skin on the legs, try to clean the toes well, those are harder because of the feathers. Apply triple antibiotic to the joints and wrap. She needs to be on clean dry bedding. I would be hesitant to wrap the feet at this time, you want them to dry out a little.
Swab the crop area with chlorhexidine and apply a little triple antibiotic ointment.
Do you have any antibiotics on hand?
If you have vet care, that would be best.