Thank you for the query.
Most likely your mother has jaundice
due to impeded bile flow from liver
bile ducts. In such case, it is possible to restore bile flow with two procedures.
First one is ERCP where with endoscope it is possible to put small tube into the bile ducts what should help with bile flow.
Second is percutaneous transhepatic drainage
where with a needle liver bile ducts are drained from the outside (through the skin).
Unfortunately there is no specific diet for such type of jaundice.
Hope this will help.