Ignoring food

Hi
My 2 1/2 year old Ball is starting to refuse to eat again, all she does when i try to feed her now is get out of her tank. on a daily basis all i ever see her do is push up against the lid of the tank. She is starting to do it earlier in the day around 6 pm, and she is out until about 9 am doing the same thing. The temp and humidity in the tank has been constent for a long time, and her feeding schdule as well. She was eating a large rat every 10 days. Any insite in to what might be causeing her change in behaviour, and her disintrest in food? She is not sheding, looks healthy, no signs of illness.

oh and i feed her F/T

how long has it been since she ate?

If you're feeding her large rats, she could be letting her body catch up to the volume of food she's been getting. How big is she?

You say that nothing has changed about her enclosure, can you post pictures and describe how you measure temps and what her temps are?

she finally ate, the temp and humidity are steadr day time cold side is 80-85, hot is 90-95 humidity always between 50-65.
She has been eating steadly for 2-3 months once every 10 days, 1 large rat. She is a big girl, takes he less ten 10 min to swollow a large rat. she is 51 inches long, and almost the size of a coke can around. she just started sheading again so it gonna be a while before she eats again. She is rapidly growing again, 3rd shead since march.