Looks more like GERD Consult with a  physician Dr Ashish Srivastava General Physician and Clinical Cardiologist

Hello....... It could be gastritis.. Gastritis is the most commonly seen problem these days .. Medicines can only give temporary relief.. Strict diet and lifestyle change can bring gastritis under control. Take curdrice ,drink plenty of water , have frequent small meals instead of large regular meals.Sleep 2-3 hours after having dinner . Avoid spicy, hot ,high protein containing foods like fish .Take dal rice , butter milk .take her to general physician.