Her approach may have been laudable in the 19th century. It was absolutely unacceptable in the late 20th century.
The only reason people accepted it was because it was happening in a poor country. If she had used the same approach in a North American or European country she would almost certainly have been put behind bars.
Edit: If you read the Wikipedia article about the response to criticisms of her, the major defense of her is that she never intended to create a place with clinical facilities, but instead a place where people could die peacefully.
If her institution was accurately promoted as such, I doubt it would receive the millions in funding it did, and even if it did, then the people who sent the funding should be shamed for not sending it to actual hospitals in the areas which actually saved lives. Further, that’s not what the people who went there thought. They didn’t go there thinking they were being given a “kinder” death. They went there thinking they would be treated well.