Pancreatic cancer

I may have some bad information here but here is my understanding of what has/is happened.
Jim came home from the hospital. They were not even home and he was screaming at Taylor. Hospice showed up later that day, showed Taylor what to do in regards to all the meds etc. Then things took a turn for the worst. He just started vomiting, constantly. Actually just started spewing from both ends.
Taylor is far from healthy, she is very frail. Needs a walker to get around type of thing. This is really doing a number on her, she has lost 40+ pounds in just 6 weeks. She is not sleeping but an hour or two a day. SHe is not capable of changing Jims diapers, cleaning him up etc.
Hospice showed up on Tuesday. Taylor explained that with the way Jim is vomiting that she is concerned that he is not getting enough nutrients. Hospice nurse told her that at this point it is not about nutrition but about keeping him comfortable. Think this finally made it sink in...Jim will be passing shortly.
Jim is in/out of being awake. He was awake when the nurse was there, told her he wanted to participate in the "Death with Dignity Act", medical assisted suicide. Nurse told her that it takes weeks for the paper work to go thru, and due to his deteriorating mental health it would get approved anyway.
Taylor spoke with Ernie late last night. She said that when Jim is awake he is having conversations with people who are not there. She said he is more or less just rambling, talking about things that make 0 sense.
Her niece is flying up from Utah to help her. Ernie went to go pick her up. Just hope she is not bringing her 5 kids with her, as they are EXTREMELY unruly...
Here is what I don't understand. Hospice nurse told Taylor that because Jim made the decision to not go into a Hospice facility that despite his rapid decline they can not admit him into there facility, that he will be passing at home. Anyone know if this is true? Jim also has signed a DNR so even if the nurse were there she could do nothing, correct? The end of Jims time on Earth is obviously right around the corner. When he passes what does Taylor do? Few years back they made there final arrangements. He is going to be cremated. Does she just call the company that is going to cremate him and have them come and pick him up? I am really in the dark when it comes to this sort of stuff...