“Becoming Astrid” is a bio-pic about author Astrid Lindgren, who became a worldwide literary obsession with her work on “The Adventures of Pippi Longstocking.” It’s a Swedish production from co-writer/director Pernille Fischer Christensen, and a production that’s very protective of Lindgren’s personal life, making sure to downplay any bright kid-lit spirit to focus on the horrible times she endured while trying to survive her twenties, facing numerous trials of the heart and mind. Perhaps this is the best way to get into the thick of Lindgren’s experience, with “Becoming Astrid” largely skipping the routine of individual character introduction to focus on her personal bruising, and how such trauma would eventually inspire unusually observant and mature books about the juvenile experience.  Read the rest at Blu-ray.com