Author Mel Ellis has an interesting chapter in one of his books on the subject. I had a mom die from ALS and had some mixed feelings on the subject. After reading his real life experience and experiencing the courage of my mother to endure, We have no business meddling in God’s plans for others.
God bless you and your mother for having the conviction and willpower to go through His trials. I knew a lady who was diagnosed with breast cancer which ended up being terminal. I highly respect how she wanted to get the most out of life before ascending to the Pearly Gates, rather than simply give up and leave the rest of her family in the dark. She knew that everything would work out if trust was placed in the LORD.
If the Romney supporters in 2012 had such conviction, we might be looking at a President Bachmann (or another Christian conservative) instead of a President Hussein.