White's Tree Froglet not eating

[BlueisallIneed]

I would put her back into the bigger tank and I hope you have some hiding places and climbing branches. She needs more room than that and might be just taking time to adjust to her new home. I wouldnt waste you money on a fogger. They have to use distilled water and they are toxic for whites. Just keep misting with bottled spring water. You might want her to be looked at by a Vet just to make sure she doesn't have parasites or any other problems.