Thanks for the query to H.C.M.Forum.
You only mentioned that she have pancreatitis
( acute ),but not mentioned the symptoms.
Upload the latest report of pancreas
Get in blood for amylase
Stomach pain is the main reason of problems.
Let me explain the reasons which develops hyper acidity or gastritis
Fried food ,
coffee or tea ( excessive ),
junk food ,
All these produces stomach pain and if you want that your sister remains free from this disease , she have to avoid above mentioned items in her life.
In my opinion there is no proper diagnosis.
Good luck for your sister.