\rbrOn 3 Stember 1939, 25-year-old English aristocrat Unity Mitford walked into a Munich park and s herself in the head. Distraught at the prospect of England .\rbr\rbrHitlers British Girl is a Channel 4 documentary film about British Nazi sympathizer Unity Mitford and her relationship with Adolf Hitler. The film made by following .\rbr\rbrHitlers British Girl is a Channel 4 documentary film about British Nazi sympathizer Unity Mitford and her relationship with Adolf Hitler. The film made by following .