Considering white people from Englishstan consistently brought problems and misery to our doorstep, MT was one of those very very few white icons who showed not everybody from the west think alike, at least during the time she existed.
There are plenty of people who have done the same as Mother Teresa, there is no doubt about it. But they aren't in the limelight because you cannot sell regular Indian folk doing good things to the west. Heck even now, with the advent of media and internet, they are quite intrigued by poverty. Imagine what it must have been like in the 19th century or early 20th century. Race sells and poverty sells more, race clubbed with poverty breaks all limits in sales. A fat rich Indian is boring after all. You could say she was one of those few white people who looked above petty differences in order to reach out to a larger more needy people and that in itself was the beauty of her existence.
However, no matter all the good things done by her and her organization she was one of the many. So I wouldn't keep her on a pedestal and say she cannot be criticized. Sure whatever she has been able to do is something that I can never do or even hope to do. Even with all the religious dogma in her mind, she was unwavering in her aim of making life better for some people and that must not be forgotten. Some critics say she did not do much to alleviate poverty. But what were they expecting, with one stroke of her pen she would wipe out poverty for good? No. Let's not forget she wasn't educated beyond Christian doctrines, that does a fat lot of good in the education department. She did what she thought was right and we must recognize and respect her for it.