If this is a regular problem, Kindly visit the ER and get evaluated in person and undergo further investigations to find the underlying cause of the problem. Don't go to sleep immediately after eating food, wait for a minimum 2 hours so that the food can be digested before you go to sleep, have a liquid diet and slowly increase the consistency based on how she tolerates it, don't skip meals and avoid eating spicy, deep fried, oily and junk food, drink a minimum of 3 liters of water per day and exercise regularly so that your digestion will improve.