Well, just to update you, she died this evening. She had been going steadily downhill so i arranged to take her to my local(ish) herp vet, but she passed on before i could get her there.
:I have a 6 year old anerythristic corn, very tame, always been happy handled a lot. She has shed 3 times in the last 2 months, and is not eating. She now seems very depressed and lethargic, no interest at all in food. She's been in a 20gal tank vivarium for years with no problems until now. I recently changed her heat light, could it be that she's a little overheated? Hot end of her tank is around 85-90 and cool end about 75. I'm REALLY worried about her, she's never refused food before, usually eats two mice every fortnight.