Complex sentence: The elderly cousin realizes that the Lord will not come to her in brilliant light at the end of her life but that at the time of death a person will understand God has always been revealed in life's surroundings.
Split into simpler sentences: The elderly cousin realizes that the Lord will not come to her in brilliant light at the end of her life. She now knows that at the time of death a person will understand that God has always been revealed in life's surroundings.