Karina has collected a total of two bronze medals, as a member of the national squad, at the European Championships (2014 and 2016), and eventually competed alongside her teammates Yuval Filo, Alona Koshevatskiy, Ekaterina Levina, and Ida Mayrin at the 2016 Summer Olympics in Rio de Janeiro, finishing outside of medals in the group all-around final with a sixth-place score of 34.549.