Lupus can attack the liver directly and cause a type of hepatitis. Your AST, ALT and other liver markers will be elevated. If you have these you should see a hepatologist. Treatment is generally to aggressively suppress lupus. I had a rather severe problem 4 years ago and it mysteriously went away on its' own. Fortunately no liver damage but we watch it carefully.
MCTD (SLE Lupus, polymyositis, scleroderma). Diagnosed 2005. Kidney, liver, GI tract, dysphagia, raynauds, barretts esophagus, quadriplegic in 2005. Recovered and now active in downhill skiing, golf, hiking. Meds: amlodipine, benezapril, omeprazole, potassium, folic acid, vitamins, maxide.
Remain Optimistic and you can overcome.