Plzchuckle pointed to the post that contains what I would recommend, and Luella May had some good questions and suggestions as well.
My major concern is, since your grandmother is in the hospital, how much will you be able to give her without interference from the doctors and nursesl? In my protocol, oleander would be a must, I believe. Colloidal silver was and is a good idea - as are all the other suggested elements in my protocol. And don't forget to protect the liver and keep it cleansed if you are able to give her some strong natural cancer fighters. A lot depends on not only her cancer and condition, but also how much she can hold down and tolerate.
A couple of other items you might consider, given your grandmother's situation are the AHCC mushroom powder to further help boost the immune system as well as a protein superfoods powder such as the one found at www.bokusuperfood.com. If you decide to try that last one, go to naturalnews.com and do a search, since they have a special deal with that company for 60% off the regular price.