Dagnosis is always a mystery till diagnosis is made. Your mother , probably has Dyspepsia
. She will need a formulation containing Rabeprazole
( acid decreasing agent ) and a gastric movement enhancer like Domperidon. Rabemac DSR
is one such formulation. Your local chemist may suggest some preparation similar to this. It needs to be taken once a day for one week. Spicy food and oily food needs to be avoided. Report back.