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I found one more book https://www.sciencedirect.com/journal/biological-conservation/vol/97/issue/3

Try to give her wax worms.

Wax worms are great for snacks or treats for frog. These worms are very small, have very soft bodies, and supply a good amount of nutrients.

Be careful not to feed...

I'm not sure that this is still relevant for you, but here is a Amphibian conservation action plan book in which there should be necessary information.