Hello,
Ouch, that does look painful!
I agree that it is not a symptom of the adeno virus though. What are you putting on it currently? As suggested,
raw unpasteurized honey is extremely good for infections, cuts, abrasions, etc. Since it is on & inside of the
mouth then it is completely safe to use.
Definitely review your tank setup with us also, so we can be sure your temperatures, etc are all good.
Maybe keep her a little warmer overnight, to help boost her immune system some. Usually 75-80 is good for
overnight temperatures when they are ill or have other issues going on.
Tracie