my sister has lung cancer, went to the liver and then to the brain. she has had chemo for 2 yrs and now 7 days of radiation on the brain. She is now bed ridden, doesn't know how to suck through a straw, can't eat or hasnt in a couple of days. yesterday she through up a lot of green liquid. There is talk about putting her on hospice. she also has opd so the doctor wanted to put her on oxygen at home. What to expect next...