The Cannes Film Festival ‘s Un Certain Regard section prides itself on showcasing discoveries of non-traditional cinema. What a fit for rising Austrian writer-director Sandra Wollner, who is making her Cannes debut in this year’s program with her third feature, Everytime ! Her debut feature, The Impossible Picture , showed the everyday life of a Viennese family in the 1950s as documented on 8mm film by 13-year-old Johanna, until the camera suddenly turns on her. Her sophomore movie, The Trouble With Being Born , was a drama about a 10-year-old android and her “Daddy.” Now, Wollner is back with Everytime , which sees a tragic death bring a mother, her daughter, and a teenage boy, who everyone blames for the tragedy, together. The cinematic exploration of grief, blame and forgiveness takes the unlikely trio on a trip to Tenerife for “a family holiday that never happened,” as the auteur puts it.…