In 1966, after two silver medals at the Europeans and the Worlds, she was voted as “The GDR female athlete of the year." She became the first woman to land a clean triple loop jumploop.
Seyfert ended her figure skating career in 1970. Unlike Peggy Fleming, she was not allowed to skate professionally. Offers by Holiday on Ice were refused by East German authorities.
Seyfert turned to coaching, and worked with the Anett Pötzsch in the early 1970s. The East German coach hierarchy later transferred Pötzsch to Jutta Müller's group, and Seyfert ended her coaching career.
After ending her coaching career, Seyfert studied languages at university and worked as a professional translator. From 1985 to 1991, she led the ice ballet at the Friedrichstadtpalast in East Berlin, where she also skated occasionally. After the ice ballet was closed, she worked at a service industry business in Berlin. She lives in Berlin-Karow.