People say that there is art through adversity. As such, to begin, it’s worth stating that Mattie Do‘s latest feature is the 13th film to come out of Laos… in its history. Furthermore, it is worth noting that she is a female filmmaker in a Marxist state. So while the country is fraught with local censorship, Do is able to deliver quality films in a place where there is no film industry or infrastructure for that kind of entertainment. Creative struggles are one thing, but judging the finished product, Dearest Sister is an admittedly hard film to review. The premise seems straightforward, yet vague enough to pique your interest: “After moving to the city, a poor…