I'd look into that high Calcium.
I know hens need calcium to lay eggs, but too much is not good either.
I'm tagging in
@coach723 AST is liver. I wonder if giving some Milk Thistle would be of benefit. Cut the Calcium, switch her feed to an 18% chick starter or all flock (less calcium than layer feed).
BUT, she's improving daily by doing what you're doing too - so...I'd be hesitant to make any drastic changes because you won't know what helped/didn't help or even worsened her condition if you throw it all at her at one time.
Brainstorm typing, just throwing thoughts/ideas out there for you to run with - yes, I do this when I talk too...drives my Hubs nutso sometimes..