On April 1–4, Mulmina competed at the 2011 Junior Irina Deleanu Trophy finished 4th in all-around, she qualified to 4 apparatus finals: she ranked 3rd in ball and hoop, 2nd in ribbon, 4th in clubs.

Mulmina debuted as a Senior in the 2013 Season, she won the all-around bronze medal at the Ukrainian National Championships behind Viktoriia Mazur.

On March 9–10, Mulmina competed at the Schmiden Gymnastik International 2013 (Internationales Turnier Fellbach-Schmiden), she qualified to 4 apparatus finals: she won bronze medal in ribbon and finished 5th in hoop, 4th in ball, 6th in clubs.

On May 15–16, Mulmina competed in senior International tournament at the Holon Grand Prix taking bronze in all-around, silver in ball and clubs final.

She was a member of the Ukrainian Group (with Oleksandra Gridasova, Olena Dmytrash, Valeriia Gudym, Yevgeniya Gomon) that competed at the 2015 Summer Universiade in Gwangju, South Korea.