rocket_pilot, has she shown signs of wanting to lay eggs? If you felt very gently with your index finger the area in front of her hind legs, do you feel anything like grapes (would be eggs).
But back to the inflammed areas---when I see the word inflammed, I think of red areas (often with swelling), and the only reddish/orangy areas I see are on the back foot, the front leg where it bends, and perhaps a little on the neck (but this could just be the pic). Is that what you're talking about?
She looks bigger than 4 inches, and quite overweight. Have you noticed any agression from the other turtle? The reddish areas I mentioned look like she's been rubbed or perhaps nipped at.

