Watch Sister Full Movie Free Online 123Movies. All her life, 80-year-old Margot Brunner (Rosemarie Fendel) has lived with her disabled sister Wilma (Cornelia Froboess) in the apartment of their deceased mother. The grove Wilma seizes every opportunity she gets to be a nuisance to her sister. When Margot meets artist Gregor (Matthias Habich), she finally gets the courage to tell her sister that she wants to enjoy her life and get out of the house. But Wilma does not agree with this.