I'm so sorry to hear that you and Katiegirl are having such a rough time right now. I've moved your original post to the area for "Diabetes" so that others that are familiar with diabetes can share their experience with you.
According to this web site:
http://www.animaleyecare.net/diseases/C ... icDogs.htm
75% of diabetic dogs develop cataracts and blindness in both eyes within one year of being diagnosed, and that cataracts can develop very quickly, and even overnight. There can be some other possible complications if cataracts are not treated, like uveitis or glaucoma, so it sounds like Katiegirl needs to see a veterinary ophthalmologist (if she hasn't yet) to find out exactly what is happening with her eyes.
I'm assuming that the hair loss/weight loss may also be connected to her being diabetic. I'm including some links to different sites with info that might be helpful:
Hang in there... and please keep us posted on how Katiegirl is doing.