What Diet To Follow In Primary Lung Cancer?

my dearest friend has primary lung cancer which has spread to her bones and liver. She also has blood clots and is injecting blood thinners. She has been given 4 months, but has been doing a diet which appears to be only certain green vegetables soaked nuts and supplements, raw and juiced. She is becoming weaker by the day. I cannot think this is helping there can be no more than 200 calories a day in this. I think this diet which she has been doing now for 10 days following another diet which at least had rice pasta and fruit in it. Please help.