This is my biggest fear also. In few days we'll see if her digestion is still working. I had her drinking good amount of water last night and I've seen her drinking by herself after that. I am considering soaking her in some point, if the hydration doesn't start to amend. I also think that the trip to vet and tube-feeding would be too much distress for her to handle. So my hope lies on regular small food items, perfect housing conditions and time...
I don't think her emaciated body can bear up a bigger feeder. Slow but steady start is where I am heading here.