Yup, we'll just have to see how long this continues. If she keeps on like this with for another month Without improvement Would it be reasonable to consider euthanizing her?
Thank you all so much for your support and advice, it's meant the world.
Do you honestly think she can go on another month? She needs to eat good or she'll continue to go down hill. If you can get her to eat and keep on with the niacin and vitamins she maybe able to pull through. We're all pulling for her.

One thing you cannot do is force her to eat by shoving food into her bill. If she aspirates it that can cause Pneumonia so watered down feed or tube feeding is your best bet there.