My Daughter Is 4 Years. She Has Had Recurrent Pancreatitis

My daughter is 4 years. She has had recurrent pancreatitis and recently had ERCP and found to have pancreatic divisum; therefore they placed a stent. It has been one month since the stent placed, but after that she has had frequent stomach pain, but the amylase and lipase levels are all normal. Doc ordered chest x-ray and abdominal CT both were normal with stent in correct position. She is not eating well and after eating something starts the pain, sometimes has nausea, but no vomiting. Doc prescribed Lanzol junior and laxopeg and she has been taking creon 10000 units.