What are the temperatures?

All of mine are still eating, even the breeder males, except for one 1500g 05 female who wants a boyfriend Temps are 94.5 on the warm side and 82-84 on the cool side(might get down to 78 at night, but inside the tubs is still 80-82). Humidity in the room and their tubs is always over 55%, but usually 60-65% in the tubs themselves.

The 32qt tub should be fine. Maybe add a hide on one end, some loosely balled newspaper and cover the front of her tub so it's dark most of the time.

Also, she may just be being a teenager They are usually around that size/age when they start being picky about eating and get a bit rambunctious.