Like everyone has said... From your enclosure, the tank looks WAY too large for her with way too much open space. These picky ball pythons often need to feel very secure in order to have an appetite.

I wouldn't call that a lot of clutter- that is a lot of open space. She has hides, but proportionate to the amount of space, it is still too little clutter/hides.

Some ball pythons may be fine with this setup, but since you are having a picky eater and having trouble, then you can start with fixing these possibilities first. Especially since she is recently just refusing the food in front of them and wanting to find a way out- seems to be usually an indication that they don't feel secure, so want to find somewhere safer.

How much does she weigh right now?

Just guessing her current size, I think temporarily moving her to a new home (a 15qt sterilite plastic tub, with two hides and a UTH) to get her to start eating would be ideal. Some snakes will eat food left in there overnight, but I think more likely than not for your snake, the reason is the setup...

You can check out this: http://ball-pythons.net/forums/showt...e-Basics-*DUW*