Filmmaker Lynn Shelton made quite a splash in 2009 with the Sundance-minted Humpday, about two straight guys who enter into an “art project” pact to make a gay porn film together, and find themselves locked in a circle of awkward uncertainty. Her new film, Your Sister’s Sister, centers on an emotionally unstable guy, Jack (Mark Duplass). Worried about her friend, Jack’s deceased brother’s ex-girlfriend Iris (Emily Blunt) offers up her family cabin on an island in the Pacific Northwest so that he can try to locate catharsis in solitude. Unbeknownst to Iris, her lesbian sister Hannah (Rosemarie DeWitt), who just ended a long-term relationship, is also there. When Iris shows up to surprise Jack, a sisterly reunion and other complications ensue. Recently, I had a chance to speak to Shelton one-on-one, about her dedication to improvisation, her film’s unusual title, her “ridiculous” diet, jean shorts and more. The conversation is excerpted over at ShockYa, so click here for the read.