You probably need to re-calibrate your scales, because for a female that was only eating a mouse the same girth of her to gain about 2000 grams since March would have to be a record of some kind. And not healthy weight gain by any means. Do you know just how short 2.5 feet is? She must be as thick as 2 soda cans to be 2500 grams at 2.5 feet.