Born into a culturally rich family-her father the composer Willy Mattes and her mother the actress Margit Symo-she entered the performing arts early, developing her craft within Germany’s vibrant theater scene. Her screen career quickly intertwined with the work of Rainer Werner Fassbinder, appearing in four of his films, including The Bitter Tears of Petra von Kant and In a Year of 13 Moons, and…