my eight yr. old grandaughter experienced a kidney stone measuring 8 9almost a 1/2 in. in size. the removed it , but first actually had to chisel it until it was the size it could be retrieved. she has had diaria during this time, not painful stomach type. she is seeing a kidney doctor now for further tests but i have never heard of the combination of these two things. could anyone explain it to me? again, she's only eight yrs. old.