My mother is dying and my family has yet to discuss her inevitable death with her. My brother says we should not have this conversation with her. I feel she deserves that conversation. Who is right?

You are correct. If you ignore the inevitability of death and do not have this important conversation with your loved one, you leave that person alone to face this most difficult final journey without the requisite love and support so critical to a peaceful death. There could be nothing worse than facing the end of your life with everyone around you pretending that it is not happening.