Sam721-
So sorry you're going through this.
I have 3 A brothers and the sadness and pain can be really overwhelming sometimes.
Nothing wrong with saying "I love you and it hurts me to see you abusing your body so severely, and I wish I could help you. Yes, you may be dying but your last few days will not be made any better by continuing to drink. I just think of your children and how each minute you live sober is so precious for them."
But you can't expect it to do anything, or expect anything from her once you say it. It has always helped my peace of mind to share with my brothers (my baby brother especially) how much I love them. Period. They will do what they will do. And if any darn thing WE say could make a difference in their sobriety then none of us would be here on this site!
Lots of great support here. Sending you a shot of courage and gentle (((hugs))).
Peace,
B.