Oh good, you got rid of them then!
The photos you posted doesn't look like molt. Molting happens in a specific pattern starting at the head/neck, then down the back, breast, wings and tail, so did you see that begin? She's already molted at the head/neck, etc.?
If you have done all those treatments, I would wait and see if you find more bugs in the coop or on the birds.
Run a white paper towel under the roosts tonight to see if you get any more bugs.
As for her feather condition. Even if the mites have been eradicated, the feathers will continue to...