[Corkiebrd]

I agree, a temporary separation might be in order, to see if the baldness and scaly patch heals. It might be something in the new environment, like dust mites etc. You might offer her a pie pan of water to bathe in.
Her sitting an the floor is likely an indication she ready to lay eggs. Since you don't have a nest box, you might offer her a wash rag, as a place to sit. Stay away from foods high in iron, as this binds to calcium, and causes eggs bind. If she's whimpering she's in distress. If there's any real doubt about her health, look for a avian vet.

Corkiebrd

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