Nodular Contour /Heterogeneous Liver Suggest With Normal Liver Labs?

My mother is a 65 year old female, 136 lbs, and on peritoneal dialysis for 3 years due to End Stage Renal Disease. Last week, she began experiencing severe abdominal pain that was a burning/gnawing pain. She went to the hospital and a CT Abdomen was taken without contrast. All was normal.

Over the next four (4) days, the pain persisted, particularly during dialysis exchanges at home. She returned to the hospital who admitted her. Another CT Abdomen was taken at this time which showed "nodular contour on the liver", free air in transverse colon which appeared to be dilated. She was also constipated for several days during this period. The CT impression suggested clinical evaluation for chronic liver disease.

A standard liver panel was taken and all results were normal. Nothing even close to elevated. She has never had a history of any liver issues and never had anything show on a CT for liver. After a day in the hospital, all stomach pain disappeared, she was able to use the restroom, and all stool samples/GI tests were normal without blood. She is naturally anemic due to ESRD with low iron/protein. Her last ANA/autoimmune panel was in December, all clear. No history of any hepatitis.

An Ultrasound Right Upper Quadrant was performed and the impression was no biliary obstruction, moderate ascites (tends to be normal due to peritoneal dialysis fluid), and "heterogeneous liver." The impression suggested referral for cirrhosis evaluation.

She began taking Hydralazine (25mg/3 times daily) in the last 3-4 months. She also takes a host of other blood pressure medicines.

QUESTION: She is currently awaiting a kidney transplant and very worried about this. A blood test will be taken in a couple weeks by a specialist that is supposed to diagnose Cirrhosis. Given this presentation alone, what other causes could explain this imaging results? Should we fear the worst?