Hi.  Constipation is nearly a common problem in children. It  has many causes, Anatomical or physiological.  If anatomically theres some kind of obstruction or rectal muscle tightness then theres need to get opinion of a surgeon.  But if theres physiological problem like indigestion.  Then its need to b corrected. Constipation medicine won't work well if digestion is not good.        So avoid bakery products , biscuits, Heavy foods that causes indigestion.  Give her plenty n warm water. And most importantly do not self -medicate.

No... U don't give her that... U give it to her only after digestion is clear.. Otherwise it will leads to some negative effects

There are various causes of constipation in children. Few may relate to their habits of defecation. Give her Ayurvedic medicine for digestion thereby her constipation will be relieved.