Dobrynska competed at the 2010 Hypo-Meeting in May, but she was in sub-par form and managed only a score of 6023 for seventh place (over 600 points behind Jessica Ennis' winning mark). In spite of this she proved herself as a contender to the gold medal at the 2010 European Athletics Championships in July. After the first day, Dobrynska ran a 200 m best of 24.23 seconds and was in second place – 110 points behind the Ennis, who led the competition. The following day she scored a best in the javelin (49.25 m) and was 18 points behind Ennis with one event remaining. She finished the competition with an 800 m run of 2:12.06, another personal best. Her total score of 6778 points was her best ever performance and beyond Carolina Klüft's championship record. However, Ennis took the gold, also setting a personal best, leaving Dobrynska with the silver medal – her first podium finish at the European Athletics Championships.
She returned to competition at the 2010 Décastar meeting in September and was the runner-up behind Tatyana Chernova, having a total of 6309 points from the event. The following year she finished in fifth place at the 2011 World Championships in Athletics, getting a total of 6539 points and setting personal bests in the hurdles (13.43 seconds) and 800 metres (2:11.34 minutes).