Who Do You Think You're Talking To?

The kids here call me “Missus”. Not Ms. or Miss. No first or last name following it. Just “Missus”. What kind of address is that? Apparently it’s a literal translation of the Greek way of addressing a female, but it doesn’t really work for me. Does anyone else think it sounds like I’m a rich white lady living on an antebellum plantation being addressed by my poor slaves?