Sorry, I just read those ?? and !!! as you being a bit exasperated.... it's so easy to misinterpret text.
I know it must be a bit daunting dealing with this and I have to be honest with you, her prospects are not good once they have lost a lot of weight.
If her breath smells bad, then you are going to need to treat the yeast infection that is causing it as well as keep massaging. Women's vaginal thrush cream is probably the easiest product to get hold of to use and you are going to need to get her to swallow it.... maybe mixed with some egg if she will still eat.
I was hoping that you might have seen an improvement in her poop since you started massaging her crop. Sometimes there is a noticeable increase and that would be encouraging as it would suggest it is the crop where the problem lies. I've spent as long as a fortnight massaging a crop to get it broken up when it was partially impacted and I've had to do surgery twice when I couldn't break it up, but I have never personally dealt with a sour crop.
PS. No, feeding her a boiled egg will not make her an egg eater.... if you are lucky enough that she survives this. I would mix the mashed boiled egg with a little water to make it easy to eat.