Kober returned to athletics in 2008, mainly as a form of enjoyment with no serious ambitions to take the sport further. She joined TSV Bayer 04 Leverkusen where she was coached by Joachim Lipske. Kober was quickly identified as a potential talent in throwing events and by 2009 she was competing in national competitions. Classified as a T/F34 category para-athlete, Kober specialized in both the javelin and shot put. She qualified for the 2011 IPC Athletics World Championships in Christchurch, New Zealand, and took gold in both her events. In the shot put, where she competed in a mixed F32/33/34 grouping, she threw a distance of 9.30m, a new world record.