Your daughter's symptoms suggest that she has a condition called the "Irritable Bowel Syndrome' or IBS. You will find lots of good advice if you read about IBS on this website: kidshealth.org/kid/health_problems/stomach/ibs.html#
She should avoid eating cabbage, cauliflower and brocolli,spicy foods, fatty foods and hard cheese. One of the best foods for her is mealies and popcorn as well as muesli with high fibre, sunflower seeds and nuts. Strangely enough she should not have too much fruit and in any case she also has another problem due to eating acid fruits.
She should have a good probiotic such as Probiflora every day.
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