From ABC News:
In dozens of letters spanning 66 years, Mother Teresa described the “emptiness” she felt and confessed her struggles with faith and the existence of heaven in pages she had planned to have destroyed.
To millions her work still shines as the example of Christlike devotion. It brought her the Nobel Peace Prize and beatification by Pope John Paul. But once she began her work in India she never heard God’s voice again. Nine years after she founded her mission in Calcutta she wrote, “What do I labour for? If there be no God — there can be no soul — if there is no Soul then Jesus — You also are not true.”
“Unlike the other saints, who might have been going through their day with a lot of consolation from their prayer, Mother Teresa was running on empty and doing all these wonderful works,” said Father James Martin.
But while the faithful see her struggle as inspirational, some atheists are taking it as confirmation of their own rational doubts and proof that the faithless can display enormous benevolence.
“Of course nonbelievers all over the world display compassion,” said Dan Barker of the Freedom From Religion Foundation. “She was forced to go through the motions and admitted her own hypocrisy.”
As a non-religious person, I don’t know what comes after this life. All I can say is that Mother Teresa did a lot for other people while she shared this earthly plane with the rest of us, and I hope that, wherever she is now, that she is happy and at peace.