Sorry to hear this. I would be more concerned about dehydration than the cats at this point.

She's likely not hopping around the house, but probably roosting somewhere secluded. Search everywhere in the nearby area of the enclosure; under couches, on window sills etc. She wont last too long without water, so maybe put out a few water dishes and hope she finds them. Maybe play some recordings of redeye calls. The sound might make her restless and easier to find.

Try this link. The call is about half way down the page:

Songs of the Frog