With her first feature Forastera opening at Film Forum in New York this Friday, writer-director Lucía Aleñar Iglesias is here to explore the hidden depths of Celine Sciamma’s Petite Maman, the 2021 drama about a little girl who copes with her grandmother’s death by making a new friend: Her own mother, when she was also eight years old. Your genial host Norm Wilner wants you to know it’s simpler than it sounds.