[5] Her Danish maternal grandfather, Poul Heiberg Christensen (1918–2010) was director of SAS, consul of Denmark in Munich and opponent.
On 8 May 2011 she was awarded Reumertprisen as singer of the year for her role in Wicked (one of two non-replicated versions of the show) on Det Ny Teater, the first musical performer to receive this prize.
In 2013 she also dubbed Elsa for the Disney film Frozen, performing the Danish version of the song "Let It Go" ("Lad det ske"), which won an Oscar on 2 March 2014.
[13] On 9 February 2020, her birthday, Maria Lucia was called to join Idina Menzel, Aurora and eight more of Elsa's international dubbers to perform the song “Into the Unknown” during the 92nd Academy Awards while being pregnant with Per.
Every international performer sang one line of the song in a different language: Maria Lucia in Danish, Willemijn Verkaik in German, Takako Matsu in Japanese, Carmen Sarahí in Latin American Spanish, Lisa Stokke in Norwegian, Kasia Łaska in Polish, Anna Buturlina in Russian, Gisela in European Spanish and Gam Wichayanee in Thai.