Respected user , hi
Thanks  for using Healthcaremagic.com
I have evaluated your query thoroughly .
* Treatment of 
IBS depends upon definite diagnosis , so before scopy can 
   not  be commented upon but grossly certain points of favor 
- let her consume plenty of liquids
- soft light diet at regular intervals to prevent 
constipation / 
diarrhea - avoid all high fat content , cheesy , spicy , non veg items to be consumed
- avoid 
stress , anger episodes is must
- keep her ambulatory , playing , gentle exercises help
- pre & pro biotics support to some extent empirically
Hope this clears your query
Welcome for any further assistance .
Regards .