Twelve years after competing in her first Olympics, Konstantinova qualified for her fourth Bulgarian team, as a 36-year-old, in the RS:X class at the 2012 Summer Olympics in London by receiving a berth from the ISAF Sailing World Championships in Perth, Western Australia. Delivering a mediocre effort in the opening races, Konstantinova dropped to twenty-second place overall in a fleet of twenty-six sailors with a net score of 180 points.