I have never heard of a liver count that high! Does she have hepatitis? I guess more information is needed but yes,,,,once getting off alcohol/drugs,,,the counts should definitely come down unless of course she also has hep...
I am very sorry for your family member. Unfortunately, I think you are needing some reassurances that no one here is able to give. We aren't doctors and what you've been told is correct - those are very high liver enzymes.
Try to be patient - I'm sure when the doctors have something to tell you they will. They need to get as many answers as they can before they start making guesses.
Keep the faith.