I hope this man will find peace in his heart about his mother dying. He has started the grieving process, and it will take time for him to come to terms with her death.
Your profile says that you're caring for your mother, so I'm guessing it's your brother who may be in denial about his mother. Hopefully if your mother is in fact dying, that you've brought hospice on board and they can have a talk with your brother if needed. Otherwise just let him come to terms with it his own way, as everyone deals with death and the thought of dying differently. There is no one size fits all. The most important thing is to just be there for each other and make sure you leave nothing left unsaid with your mother.
I recommend that you recommend that this "someone" go to grief counseling or speak to family members. If this "someone" has access to doctors as in being a Medical POA or the next of kin, then doctors may be able to help.
You've given us not enough information to advise much other. Welcome to the Forum and do know that the more information you supply to us about the details involved in your question, the better help we can attempt to be to you.
Hopefully if your mother is in fact dying, that you've brought hospice on board and they can have a talk with your brother if needed.
Otherwise just let him come to terms with it his own way, as everyone deals with death and the thought of dying differently.
There is no one size fits all.
The most important thing is to just be there for each other and make sure you leave nothing left unsaid with your mother.
We need some context in order to give you appropriate guidance.
You've given us not enough information to advise much other. Welcome to the Forum and do know that the more information you supply to us about the details involved in your question, the better help we can attempt to be to you.
Good luck.
I was very close to my mother-in-law and had difficulty accepting that she would die.
She had non-Hodgkin’s lymphoma and was 68 years old when she died I am 68 years old now.
My mother-in-law was a wonderful mother and grandmother. I miss her, but happy that she is not suffering anymore.
She wanted me to be a peace about her death. She asked her doctor to speak to me and it really helped.