Use the search engine google to search for 'fistua leakage with bile leakage.' You should be able to pull up a few articles of this happening. It's typically in cases of hepatic resection, but I believe you'll find some reference to gallbladder issues. You may be able to find some information of help.
Have the doc's checked for underlying Crohn's? Crohn's disease can go along with both gallbladder issues and with fistulas. Fistulas also suggest an on-going inflammatory process.
What are the doc's saying?
they appeard after the surgery . and it is where the bile leaks from !
She shouldn't have bile leakage for this long a period of time. You need to talk with the doc who did the surgery and find out what they intend to do about the problem. Or you need to speak with a doc who specializes in problem cases to see if you can get this taken care of.
The major drawback will be that no other doc will really want to take on another doc's possible mistake, which is going to make things difficult.
If she has fistulas, does she also have some other underlying condition? Or did the fistulas appear after the surgery?