I have no experience with liver shunts, but I've read a great deal about them. The University of Tennesee has exceptional success rates and their costs are usually lower than other hospitals that have board certified surgeons. Your little girl most likely will be able to lead a normal life with the proper treatment. I will keep you and Stormy in my thoughts and prayers.
There are so many other excellent links to read when you come to these. These are just a start.
http://www.vet.utk.edu/clinical/sacs...mshadoanim.mov http://www.vet.utk.edu/clinical/sacs...2013-09-26.pdf