As to Mother Teresa, two comments:

A number of religious figures, including Billy Graham and one of the "big name" Catholic saints (whose name my aging brain refuses to divulge at the moment) had their periods of great doubt. Join the parade, Mother Teresa!

This news about her doubts just goes to show that belief in a god is not necessary to a moral, a charitable, dare I say a "saintly" life? The kindness, the service, the charity, the virtue is, as the cliche says, "its own reward".

Dave Oesterreich