I never knew much about her. But Chris Hitchens is someone I respect and trust. His article on her:
MT was not a friend of the poor. She was a friend of poverty. She said that suffering was a gift from God. She spent her life opposing the only known cure for poverty, which is the empowerment of women and the emancipation of them from a livestock version of compulsory reproduction. And she was a friend to the worst of the rich, taking misappropriated money from the atrocious Duvalier family in Haiti (whose rule she praised in return) and from Charles Keating of the Lincoln Savings and Loan. Where did that money, and all the other donations, go? The primitive hospice in Calcutta was as run down when she died as it always had been—she preferred California clinics when she got sick herself—and her order always refused to publish any audit. But we have her own claim that she opened 500 convents in more than a hundred countries, all bearing the name of her own order. Excuse me, but this is modesty and humility?
The rich world has a poor conscience, and many people liked to alleviate their own unease by sending money to a woman who seemed like an activist for "the poorest of the poor." People do not like to admit that they have been gulled or conned, so a vested interest in the myth was permitted to arise, and a lazy media never bothered to ask any follow-up questions. Many volunteers who went to Calcutta came back abruptly disillusioned by the stern ideology and poverty-loving practice of the "Missionaries of Charity," but they had no audience for their story. George Orwell's admonition in his essay on Gandhi—that saints should always be presumed guilty until proved innocent—was drowned in a Niagara of soft-hearted, soft-headed, and uninquiring propaganda.