No, someone would have contacted CPS. They've already had CPS in their lives and kids don't just get sent back to India overnight. If they were deeply tied to their church, they'd have talked with someone in their church, if they had been talking of sending her back, because her parents were wanting her back, there would be an airline ticket, at the very least. Also, the former parents would have to formalize new custody papers.
I don't really have him going online, and re-homing her to a stranger, as my top theory, but it is a theory of hope. If that is what happened, they may be able to track her down. He is in tech so I'd think he knew his way around the Internet to find these kinds of groups.