She needs re-adjustment of the left hip and left sacroiliac joint!
Your daughter needs re-adjustment of the left hip and left sacroiliac joint.
Try to find a specialist, a chiropractor, an osteopath or a therapist practicing shiatsu or a Yumeiho therapy. He/she must know about the relationship between the sacroiliac joint and the constipation.
Check the length of the legs of your daughter, while she is on her tummy on the floor. Odds are 100 to 1 that her left leg will appear shorter then her right leg.
You need a specialist to treat this.
Yes, water is important, fibers are important ... but until that left sacroiliac joint is brought to the same position where her right sacroiliac joint is, she will be suffering, food can only minimize it, but in very many people, food alone is not enough.
This problem can be passed from mother to child... resulting in "inherited constipation" or "we have it in family".
It is treatable, and young child may need not more then 1 - 5 treatments.
A 40-50 years old adult person who was suffering from constipation for 30 years may need 10 to 30 treatments.
White Shark