'Arkangel,' a Black Mirror episode directed by Jodie Foster, deals with one of the most commonly referenced relationships today - that of a mother and daughter. Mother-daughter relationships onscreen easily fall down a clichéd path and directors usually try to avoid that. But 'Arkangel' stands out on its own because it stresses that cliché. It makes sure that the relationship between Marie and Sara is as cliché as it can get when Arkangel is not between them. Without Arkangel, Marie…