Annika Pham “I am a mother of young kids but, boy, I hope I’m a very different kind of mother than Eva,” says Danish star Birgitte Hjort Sørensen (“Borgen,” “Pitch Perfect 2”) about her character in the Danish psychological drama “Dark Horse,” showcased this week in Canneseries’ official competition. The story about a mother-daughter toxic relationship, set against the backdrop of addiction, turns on 17-year-old Anna and her mother Eva who move back to Eva’s small provincial Danish town from Shanghai.