That does look really odd.Picture update
Other than slow feathering, I really don't know what is going on here.
There is probably nothing you can do to help, other than providing the normal good care you would for any other chick: water, chick starter, access to warm & cool areas in the brooder, enough space, protection from predators and from extreme weather, and so forth.what in the world can I do to help her!
Edit to clarify: I think you are probably doing those things already. I'm just listing them to make it clear what I mean.