Hi! I'm so sorry to hear about your dog....I went through the same thing 1 year ago. Teddi had a liver shunt and was in the hospital this very week. I would suggest you to go this site:
Liver_Shunt_And_MVD_Support@yahoogroups.com
someone on YT suggested I go there a year ago and I was so grateful. The surgery here in CA was going to be $4,500 to $6,000 (on top of the $2,500 for her being in the hosptial and for the stintigraphy test) but that group told me about going to University of Tennessee vet teaching hospital and the surgery there was $1,200, not to mention it is the best place possible to have the surgery since the doctors there study this condition. Good luck and definitely check out that group....they are very very helpful. BTW...my Teddi is all better and living a full and happy life!