Your grandmother is awfully far along in the disease process, but I am one of those who believes never say never.
So far outside of mainstream medicine (but in FDA trials) is a very potent pancreatic cancer fighter made from an extract of the common oleander plant. It IS available as a patented medicine from Honduras via FDA exception rule.
A study just published this past December in peer reviewed journals attested to the ability of oleander to induce cell death via autophagy in pancreatic cancer cells:
http://www.tbyil.com/autophagy.htm
Other studies supporting oleander as a potent cancer fighter and immune booster can be referenced at:
http://www.tbyil.com/Newman_Studies.htm
or by going to PubMed and doing a search for "oleander and Newman" (noted MD Anderson researcher Doctor Robert A. Newman has led or participated in many of the most important oleander studies).
The patented medicine form of oleander known as Anvirzel may be obtained at:
http://www.saludintegral.hn
and there is also a supplement form modeled after the medicine that is available from South Africa, where it has had over 90% success against cancer ad 100% success against HIV/AIDS:
http://www.sutherlandiaopc.com
I hope that someday soon the world will know about this important cancer fighter and have access to it, as I am convinced it could save millions of lives.