In 2013, Berezko-Marggrander struggled with injuries at the start of the season. She won the all-around gold medal at the 2013 International Schmiden Tournament. She then competed at the 2013 Thiais Grand Prix. She competed in the World Cup series, at 2013 Pesaro World Cup and 2013 Corbeil-Essonnes World Cup. Berezko-Marggrander fell ill and withdrew from the 2013 European Championships in Vienna, Austria. She then competed at the 2013 World Cup Final in St.Petersburg, Russia where she finished 9th in all-around behind Azeri gymnast Lala Yusifova. She qualified for her first event final in hoop where she finished 8th. She tied for 13th place with Lala Yusifova in the All-around at the 2013 World Championships. She then competed at the 2013 Grand Prix Final in Berlin where she finished 5th in all-around and qualified to 3 event finals (hoop, clubs, ribbon).