In other words, itching is a sign of liver function decrease. When the liver isn't working correctly, bilirubin can cause itching - particularly in the feet and hands. Call the doctor and ask for help. After all, your mom just bought a very expensive surgery and deserves to be treated well.
i doubt the itching is related to the prgraf. need to make sure that the liver is in fact totally normal in function and that there is no bile duct issue.