Several of the cast members (Fionnula Flanagan, Gina McKee, and Dame Maggie Smith) were born outside of the U.S., although they were supposed to be portraying Americans from the American south.
At the beginning, the license plate on the car says "Louisiana 1937".
At 1:25:40 in in a flashback scene Sidda has 3 siblings, a sister & 2 brothers. All 4 children are seen again at 1:25:49 in as they enter the church. However in the flashback of Vivi's breakdown only 3 of the kids are seen going outside into the rain. At 1:30:22 in when the dr checks on the kids at Willetta's there are still only 3 children seen.