There are several bone disorders too that can raise this enzyme like rickets,
osteomalacia, Paget’s disease of the bone, tumors, metastasis
and recent fracture. If the bilirubin too is raised so high then hepatitis (A, B, C,E), liver abscess, obstruction of common bile duct by stone, cholangitis, gall bladder disease affecting the liver too and can also be due to cancer. So if your sister’s condition is failing then you should consult a hepatologist and rule out the above conditions.