Mirela started to train for gymnastics at the age of 5 at the Baia-Mare Sport Club, under the direction of Adriana and Nelu Pop (who also coached Ludivine Furnon).

In the same year she tied for gold on the uneven bars with Svetlana Boginskaya and Natalia Kalinina at the European Championships in Athens, Greece.

[5] Together with Lavinia Miloșovici, Gina Gogean, Cristina Bontaș, Vanda Hădărean, and Maria Neculiță, Mirela was a member of the Romanian team at the 1992 Summer Olympics Barcelona, Spain.

In Barcelona she won silver with the team and tied for the fourth place for the uneven bars with Lavinia Miloșovici and Kim Gwang Suk.

In 1996 she won the silver medal for individual women and for mixed pairs (together with her future husband Octavian Romas) at the first Romanian National Aerobic Gymnastics Championships.