You have received some absolutely lovely words which I am sure will help you. When my father was at death's door, I told him not to worry. He would be floating around looking at everyone below running around like scalded kittens, but would not hurt any more or even worry about himself. I had seen programmes on the television which gave me the fuel for that moment. I was holding his hand when he died and was not aware of his death at that moment. When I realised he had gone, I looked up at the ceiling and said to him "Bye, Pop, be happy". I always felt he would be happy as he had lived such a great life and was a credit and an example to all of us. I went and fetched mother who was also not aware, to hold his hand a little longer. I didn't even cry, not until the funeral when it all came out.
If you trust in God I am sure he gives you the strength to cope with whatever comes along. He has helped me in so many ways I often wish everyone could have the same help as me and thought as much of Him as I do. He will give you the strength to do what is necessary, and to say the right things, if you just ask. Just believe.
As the other writers say, we shall be thinking of you, and in my case praying for you, which I hope at the end of the day will make life a little easier to bear.
All the best.