Get Your Dog Care Questions Answered by Experts
I am sorry you are worried about Sofie. I am a veterinarian and will do my best to help.
I am worried about her gums being white at times, and the elevated liver enzymes may be a clue to her problem. Do you have a copy of her blood tests that you could post here?
One thing I would check for is a condition called a liver shunt. That would involve a special test, called bile acids, that takes 2 hours. Another thing would be to check her pancreatic function which is also a special test, not part of a routine blood profile. Seeing her blood tests will help me know what tests were and were not done.
The white gums and not eating might indicate internal pain. There are good prescription pain medication that might help but you would have to get them from your vet.
There are also prescription appetite stimulants that might help her.
At home, all you can do it try to keep her hydrated: offer warm broth as well as water.
Let me know what other questions I can answer.
How is Sofie doing?