You can help her by the following-
1. ENO salt in water
, as and when required. It is safe. But too much of anything is bad.
2. She should avoid any fried stuff, namkrens, sweets, spicy food. 3. Not to go to bed within 2.5 hours of consuming any food.
4. Not to drink too much water after meals. 5. Should consume a little food at a time. She can take meals every 2-3 hours if she feels hungry. 6. She can consult if she does not improve after all these measures. She might need medication for a continuous period of time.
All the best!