The enclosed, claustrophobic feel from the confined aspect ratio in “Runner” lends the sensation of being trapped, which makes it one of the stronger directorial choices by Marian Mathias in her feature debut. Confinement is the order of the day in this story of stark emotion, unforgiving landscape, and the comfort of finding friendship in a time of loneliness and grief. It’s a beautiful film that gives a bleak yet hopeful view of a young woman’s uncertain future. Haas (Hannah Schiller) is an 18 year old only child who lives with her mentally ill father (Jonathan Erickson Eisley) in the des...