I am sorry for the diagnosis of liver shunt
From what I understand LS is genetic and you should definetely let the breeder know. The breeding stock she is using needs to be spayed and neutered to prevent future offspring being born with LS.
I see you are in Oak Ridge..I live in East Tn also. Have you consulted with Dr. Tobias at UT? She is the best in the nation for treating LS babies.