I was surprised to learn that it was an orthodox sect as conservative as the Chabad that was predominantly providing services to Jewish tourists and other visitors in Mumbai. I didn't read about other Jewish groups doing the same.

From the pictures and descriptions of their activities, though, this family appeared far more open, and less "ultra-orthodox" than the traditional ones you describe. I guess they would have to be in their missionary role there, living in a very different cultural setting in India and providing services (internet even) for Jews (and non-Jews) of different backgrounds. The Rabbi's late wife didn't appear to fit that image of a covered, sheltered woman. Sounds like the movement is very conservative in their traditional settings.