Why did mcgovern and her husband attend a baptist church service, especially if they're not baptists?

Having read the letter sent by Aloo, I feel that Mr.Velji is thinking that his prediction about Aloo getting a good education but the mother losing Aloo is correct.I also think that he is feeling bad for Aloo's mother because it seems that she has already lost her son within the first few days after he left.

Hope this helped.

Finished reading the story few weeks back.