I am sorry to hear of your heartache and her suffering. I myself was just diagnosed with an aggressive breast cancer maybe 10 days ago after not having it for 19 years and it is scary.
Watching a loved one suffer and be so close to death has to be devastating and I am sorry you have to go through this..sometimes life is so hard. Hopefully if you and she believes in God this will help to lean on Him.
Darn I had a long and very helpful posts on how to get nutrition in someone who can't eat but for some reason when I go to user finder and type in my name and get messages just now to get that article and another, it said I had no messages despite having 5 or 6 pages of posts so I could not find it as have no title to search by. In fact, it took me a half hour to find the link below despite having most of the words in the title so this is going to curtail my helping people as I will be unable to link to things I previously posted (if anyone knows how o fix this glitch please let me know even though I type knowledge seeker and it says that it then says no messages found for knowledgeseeker (one word not two and cant get it to do with two words (knowledge and seeker) to access these posts so please help if you can help me get that fixed). It did have a red RR on it if that helps you find it
What I can recall was doing the three oil massage http://herballegacy.com/Three_Oil_Massage.html A young boy who could eat nothing due to esophagus problem and was supposed to die (before they had feeding tubes etc) was kept alive over 20 years on the oils alone until they finally had other ways to feed him.
Also try slippery elm gruel (organic) a teaspoon at a time spacing it by maybe 10 minutes.
If she is vomiting use herbal anti-emetics like fresh ginger tea.
immediately put her on juice fasting this is what Dr Schulze always did if they had days to live.
See all my posts in this thread for more things to do.Get lots of fresh juices in her. Drink 5 cups of raw (organic if possible) carrot juice and other veggie juices like green juices. Maybe take Dr Schulze's detox formula (herbdoc.com) or get an organic red clover tincture at the health food store and some burdock root (herbpharm brand is very good)) If you do not have a juicer, check local thrift stores often they have them for ten bucks or so. If you don't have you will have to ,make in a blender and drain several times through a cloth so no pulp at all remains as fresh pulpless juice bypasses needing to be digested and then the vital elements go to healing and repair. Try to keep any food she does get down raw.
Also carrot spinach juice was recommenced by the "father of the modern juice movement Dr walker who lived to be somewhere between 97 and 117.
http://curezone.org/forums/fm.asp?i=813024#i
Have her do some deep breathing since she cant get out of bed and open the window a little to get some fresh air in if not too cold.
http://herballegacy.com/Three_Oil_Massage.html
Do the things in the post linked above.
I am going to email you with a link to download for free Dr Schulze's videos on how to heal incurable illnesses. check your personal messages in the inbox located at the right top of page.
Even if this is her time to go, often those following Schulze's program died and easier less painful life.
Schulze had patients even worst than your grandmother..some had not only been given days to live but were supposed to be dead months or even years ago.,..most of them sent home to die as doctors could not help them.
He cured the incurables and said there are no incurables diseases but you will have to work fast. Call upon some of her beat the odds. Get some rescue remedy for you and sprinkle lavender essential oil( a real one like aura casia form health food store) around the room to promote calm and reduce stress.
Best of luck
edit ok I found that thread on when you can't eat
http://curezone.org/forums/fm.asp?i=1939538#i
Also check your private messages inbox