Hello! Thank you for the query. Bile duct obstruction or peptic ulcer can give such constant nausea. It is quite common that what is thought to be gallstones pain after a surgery turns into peptic ulcer pain. This to issues can give similar symptoms. And gallstones surgery does not cure peptic ulcer. Sometimes the stone gets from the gallbladder to bile ducts. It causes bile ducts obstruction, nausea, abdominal pain (usually radiating to the back). The stool can get white and urine dark. She should definitely visit her doctor, have abdominal ultrasound, blood work, liver tests (AST,ALT,GGTP,AP) and amylase. If all this tests will be negative, gstroscopy should be next. Hope this will help. Regards.