Now THAT is a sin of presumption. 8~)
All men experience trials and pain. It's the human condition. How we respond to those trials and pain is what matters; whether we succumb to despair or whether we trust in the Lord to bring us through them.
And that if you do, you and those around you have more mercy and less judgement than shown in your post.
No one is judging Mother Teresa except herself. We are simply reading her words to learn that for over 40 years she didn't believe in God and, according to her own words, she had lost her faith and stopped praying.
Again, while it is certainly possible she could have had one of those "death-bed conversions" RCs are so fond of, the reality is she was a lost woman adrift in terrible doubts. Given a choice between someone who works but doesn't believe and one who believes but doesn't work, what does Scripture say?
But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness." -- Romans 4:4-5"Now to him that worketh is the reward not reckoned of grace, but of debt.
Not only did Mother Teresa not believe the truth, she actively preached against the truth by saying all religions are equal.
Certainly we should all have compassion on such a hard-working woman. But as far as her salvation goes, she is to be pitied.