I am mother of 3 i found out the more liquid the children drinks the easer it for then 2 go. My 10 year old Josh & i have been going through this problem for sometime now & i have receiving some good advise from all around i also talk 2 different doctors but nothing works until i start monitoring his water in take that is how now his problem is solved & if he cant go i know that he did not drink enough water. I also have a 14month old who don't like the taste of just water so i do 1/2 & 1/2 pedialyte water & regular distal water there times during the day i give her prunes 2 eat which am lucky because she loves prunes i rely hope this help or u find something thats helps her because i can say i understand what u r going through its hard 2 watch your child in so much pain, good luck & take care.