My sympathy to your cousin and your family Magik
I voted 1 on all three, however I do share the concerns of Mistral about the third question. I think definitely if the person in question who is now incapacitated and unable to make the decision themselves has previously expressed a wish to have assisted suicide, then the family should respect their wishes. If they have not specified anything then it's tougher, and I don't know what would be right in that situation. Obviously if they say they do not want to have assisted suicide then their wishes should be respected also.