Dixie,
there are many times that I wish God would stop testing me to see how much I can handle! I would suggest some respite care and small breaks from this for your own mental health, maybe even one on one therapy as well.. Perhaps people from your church, experienced with cancer, can help you. This is the classic "boulder that is too heavy for one person to carry" situation.

Secondly I would highly recommend a cancer caregiver support group. You can get references for that from your social worker, oncologist or even the local newspaper.

Nucrosis, I think that you mean necrosis which is tissue death. The body will typically slough it off. Coughing blood and tissue particles is pretty common after radiation therapy - I did for a good month post Tx. I didn't have any major bleeds though. Repeating radiation has been under clinical trials for some time and there has been some success with it. It sounds like thay are doing all that they can and it truly is in the hands of the Master Healer, who is God. The doctors can treat you but God heals you.

His pain meds sound about right for his condition.

Hip fractures frequently cause death in elderly patients because very often fat from the bone marrow, released by the fracture, gets into the blood and causes a stroke or heart attack.

I am very sorry for your loss - we are here for you.