Hi there I understand your concern... What do you mean by major problem with out proper clinical history its difficult to suggest...Increasing her fiber intake will help promote good digestion....Foods that are fiber-rich include beans, fruits, whole grains, beans and vegetables....in adequate fluid content in your diet can help her in better digestion...try eating several small meals instead of three large ones whenever you can...Avoid foods that irritate your stomach, especially those that are spicy, acidic, fried or fatty... avoid coffee,tea etc... Avoid stress,consider calming activities, such as meditation, yoga etc...for further details consult physician or post informative querie.