Hi Luis,
It is good to hear from you, but I am so sorry to hear that your mother’s cancer has progressed to a difficult stage after several years of stable disease. This must be a very hard time both for your mother and your family.
Hand tremors occur when the liver is not able to do its job removing toxins from the blood, which then can affect the brain, as you indicate. I looked through the board discussions, and found some old postings discussing possible treatments. I will put the link for one, from Gavin, below. Treatments mentioned included lactulose, which is a laxative to help remove toxins, and rifaximin which is used to lower ammonia levels. Please note that I am not a medical person and cannot give medical advice — I am just passing along names of treatments others have mentioned on this site. You would need to check with your mother’s doctor about whether either would be an appropriate option for her situation.
The medical term for hand tremors related to liver dysfunction is Asterixis – this might be helpful in searching for treatment information.
Please count on my prayers for you, your mother and your family in the days ahead. I hope your mother finds some relief from the symptoms she is experiencing.
Here is the link: https://cholangiocarcinoma.org/db/search/Rifaximin/
Take care, regards, Mary