This isn't a direct answer to your questions but I hate this disease with a passion and any discussions about mainstream research avenues that ignore other less well-accepted forms of treatment get my emotions in a whirl. (My sister died of brain cancer.)

Please consider researching the benefits of marijuana in your efforts to help your relative. It provides tremendous relief for pain and nausea and cannabinoid treatment causes cancer cells to commit suicide. [1]

My thoughts are with you and your family.

[1] http://valme.io/c/diseases/cancer/52qqs/enough-of-this-nonse...