My thoughts looking at the pics -


You have too much empty space for her. Balls like tight spaces to feel comfortable. Add to this what sounds like you getting worried means you are more than likely trying to feed her more often and checking on her more often...so more stress for her.

Here is what I recommend -
Get smaller hides so she has to squeeze in (they like it this way)
Add crumpled newspaper to take up the extra space (or a smaller tank)
Cover the tub in a blanket or contact paper around all the one side (so it is nice and dark in there)
Finally don't try feeding her again for at least a week after you make the above changes.

It just appear she is really stressing now.

Also, 5 weeks is nothing I have had adults go off feed for several months with no issues - you just need to make sure she isn't losing too much weight.
Keep us posted.