I am very sorry you are going through seeing liver disease take your aunt's life. It is a horrible way to die. Luckily she won't know what happens at the end.
You are right, nothing prepares us for the death of a loved one. to never see that person again is a great loss.
I also feel very sad for your uncle who will have to see her near the end. I trust that hospice is giving her everything to relieve any pain she may be experiencing.
Just a word of advice to do with what you like...
People that are dying find it insulting when a person who is not dying and has no concept of what they are going through gives them advice on what they should feel or think. Most people are sad about dying. If I person enjoys life they are sad to be losing it. It doesn't work in life and it certainly doesn't work when someone is facing death. People who are dying want others to listen to them. This is one of the last time they will ever be able to express what is on their minds. Please let them say what they want and need to say. Remember, just because someone is dying doesn't mean they have become mentally disabled too. It is rarely discussed if ever what a dying person wants and doesn't want. People that are dying want support/love not advice. Advice is pointless anyway as they will unfortunately be dead soon. Love and support is all that means anything after everything else has been stripped away. Love and caring makes them feel safe and find whatever peace they can. That is what we all want in life and even more so as we are about to loose everybody and everything we have even known. Dying people are deal with things that anyone who hasn't faced death never understand.
Should your uncle need support and feel sad because he has lost his beloved wife I hope you will listen to him and accept his feelings for what they are and tell him he shouldn't be sad. He needs to grieve. He will be experiencing the loss of the woman he loves and all their memories together. That is normal and human to miss the person your love just as your aunt is going to miss your uncle.
It is your uncle's feelings. Not yours or mine or anyone elses. Thoughts and feeling are not right or wrong. It is only how we act on them that has any consequences. Thoughts and feeling are what they are.
I wish you, your aunt and uncle lots of love and strength during this very difficult time. Be well and always keep your aunt and your good memories in your heart. In that way she will continue to live beyond her time.
Hector
I'm so sorry for your pain. Your beloved aunt Martha must be very important
aunt to you. This must be very hard for you. Just remember this time you are spending with her is very important. Make this a good memory for you
both.
Best to You...Takecare