These threads may be helpful also:
There are a number of people who have successfully helped their little star gazers to heal up.
In particular are the stories of Bentley and Qwackers.
https://www.backyardchickens.com/t/761308/peking-duckling-with-crooked-neck-help...
That's very good news, @Kawie
Make sure the poly-vi-sol is without iron - that is the recommendation. I think iron is not good for them.
It will depend on where you are as to where you can find brewer's yeast. In my writeup, I emphasize that you do not want baking yeast, and you do not...
It's tough when someone cannot be with her all the time, but it is always worth a try to help them. They can recover from awful problems.
I hope she is still with you.
It is related to vitamin deficiency, so she needs extra vitamins in her water.
Here is Bentley's story...