you could put her in a rubber maid container with a vented lid and place a cricket or two in with her and observe how/when she reacts to them. i don't know about fire bellies but my green tree frogs won't except crickets from tongs yet. I usually put them in one at a time to make sure each gets their share.. and you'll better understand their behavior and technique. With my GTF, The timid one is actually more agressive about eating, as soon as he is placed in the container, BOOM! one leap and the cricket is in his mouth. The other, the tamer one, will watch them for a few seconds, sometimes doing 90 degree body adjustments as the cricket races around the outer rim. Then there's Dumper, the whites, he just crams and jams them into his mouth with his hands.