Poor little Goose, round 2

Hello everyone again,

I've got another drama I need help with .  Several weeks ago, my laying hen, Goose was poorly, I think we finally worked out that she had an egg broken inside her and i've given her a round of antibiotics as well as de-worming her (and the rest of the flock) we've also de-loused/de-mited the chooks and coop.  She's shown signs of recovery, nice red comb wattle ears and surrounding eye skin and was even plumping up a bit and fluffing up a bit around her bottom.  She never really perked up though, always with her tail pointed down or level at most.  She did go back to doing chickeny things like scratching for food and fighting for scraps, though she's never been top hen again (she was the boss at one time) and doesn't put up much of a fight when Duck takes her treats.    About 3 1/2 weeks ago she layed a shell less egg. We thought, great she's starting to really recover, so we've been making sure there's calcium sources for her etc.  Shell grit and so on.  then no more eggs at all.  Over the last three days she's been poorly again.  We've re-started antibiotics as a precaution and have been lacing a bit of bread with flax seed oil and crushed calcium tablet in hopes that's all she's missing.  About a month ago, we also changed the feed to a higher quality (according to the person at the produce shop) in hopes this would trigger her to lay again.

She's hanging out under a shrub all on her own with her tail down and just looks unhappy.  Still red in the right places, comb wattle etc.  her bottom has been mucky as well.  And i think she's passing white watery poos though i'm not sure that's hers i'm just presuming because the other chooks seem fine.  She has moments of normalicy but they don't last long.

does anyone have any idea how long it should take her to recover from the first incident and start laying eggs again? and now that we're having round two.... i don't know.   any ideas?

Thank you
Vi