At this point I would remove all food and concentrate on getting water into her. Nicely squishy is good, so keep giving the water as long as you think she's not going to vomit.
-Kathy
I have found that it's best to weigh them at the same time every morning before feeding. That way you're not weighing them and all the food that's still in them.
-Kathy
It could be something as simple as that. Another thing she might really like is a pellet mash. Try soaking some pellets in warm water, but don't leave them out all day 'cause they'll go rancid fairly quickly.
-Kathy
She doesn't need the sugar now that you're tubing food. Fine to let her eat pellets or crumbles in addition to what you're tubing. You could also try making her some egg and see if she likes those.
Inspect the skin under those poopy feathers and make sure there are no sores or maggots.
-Kathy
Not DE, lol. Have you bought the dust yet? If not, get poultry dust with Permethrin 0.25%. It might look like this:
If you already bought 5% Sevin, use it.
-Kathy