In 2015 season, Dulgheru made her senior international debut competing at the 2015 Moscow Grand Prix finishing 36th in the all-around. Dulgheru then competed at the 2015 Holon Grand Prix finishing 23rd in all-around. She competed in her first Europeans at the 2015 European Championships in Minsk, Belarus. In November, Dulgheru won the All-around silver at the 2015 Happy Cup in Asker, Norway behind Israel's Linoy Ashram.