[1][2] Marev studied comedy at the Royal Conservatory of Liège, and founded the Théâtre de l'Etuve.
[4] She was most successful in the play Madame Marguerite at The Public Theater in 1995, directed by Thierry Salmon.
[5][6] Marev also acted in numerous movies, such as Lendemains qui chantent (1985), The King's Daughters (2000), and Odette Toulemonde (2006).
In television, she played the role of Mira Van Poucke in Season 2 of Septieme Ciel Belgique.
In addition to her acting career, Marev was a journalist for RTBF's cultural program "Charivari" from 1972 to 1975.