Hi there,
Dogs are very visual animals, especially when it comes to learning and training. However, they also rely heavily on their auditory senses and will become more so following the loss of one of their other important senses.
With regards to training I would definately recommend clicker training. You will have to be very clear with the verbal commands that you use as she will be relying solely on these (whereas most dogs follow body language and other visual cues as well as verbal commands). I reccommend a book called 'Clicker Training for Dogs' By Karen Pryor. This will give you a good understanding of how and why to use the clicker as a training aid. I also recommend using liver cake as a training treat as no dog can resist it! I'm afraid its a little unpleasant to make but dogs love it! I have included the recipe for you below. Just use tiny pieces at a time as rewards.
With regards to eating you can try to tempt her with things that she particularly likes but it may be worth trying some behaviour therapy here too. When you feed her leave the food down for half an hour then take it away and do not feed her until her next feeding time. It is very unlikely that she will starve herself and offering her better things to eat and handfeeding her etc. may encourage her to become a fussy eater. However, it depends what you have been doing already. If you have already tried this she may be genuinely off her food for some other reason and it may be worth returning her to the vet if you really can't get her to eat anything.
I'm sure Lil Bit will adjust well to her visual impairment but remember that routine and structure will be extra important to her, particularly with regards to her surroundings - she will quickly learn where things are and will probably be very put out if any of these change. That doesn't mean you can't ever change things for her, just bear this in mind if you do need to make any changes at any point.
Hope this is of some use to you. Good luck!
LIVER CAKE RECIPE
1 lb of liver (lambs is best)
8oz S.R. flour (approx.)
1 egg
1 tbs. cooking oil
2 tbs. water
Garlic (optional)
Liquidise the liver with the egg, oil & water.
Mix with the flour to a dropping consistency and bake in a greased tin as a sponge.
Dogs prefer it slightly undercooked.
Will keep in the fridge for up to a week and freezes well.