Non-growing corn

[Auskan]

I bought a little creamsicle at the end of November '03. At the time, she weighed 12g. Since then she has eaten every 5 days (except for the 9 days when she was an escapee!). I started out feeding her pinkies, and have gradually worked her up to small fuzzies or rat pinkies, which she is able to swallow without too much difficulty. She is eating those every 5 days now.

My question is this: In all this time, she has NEVER shed (unless it was during the 9 days she was on the loose & I've never found the shed skin, but that was Jan 1st-9th). Not only that, but when I weighed her last night, she weighed.....12g.

I had a fecal done about a month ago, as I was sure parasites must be to blame. It turned out to be a very fresh fecal sample as she gave a sample on the way to the vet. The fecal came back negative.

Husbandry: hot spot of 80-85, cool side 70-75. Hides on both sides. Fresh water at all times. She poops regularly & it looks normal.

Any ideas?