Rosalie started playing musicals at the age of 6. In 2023 and 2024 she played the role of Winnie in the national musical Mees Kees op kamp produced by Stent Theater Productions. This musical was nominated for the Musical Award for original Dutch production. Since 2023 she has been singing in the talentclass of Zangstudio The Hague and in September 2024 she has been accepted at the MusicAll Factory of the Fontys Academy of performing arts in Tilburg.
At the age of 9, Rosalie made her actingdebut as Maud in the short film 'Maud' by the Utrecht University of the Arts (HKU). This was followed by several films, both professionally and for film academies. For example, in 2023 she played the role of Bente and the monster Morris and sang the title song of 'De vloek van kamp Nachtrust', which was nominated for a Cinekid award. She also recently played in the 48H 'Hardworking material', which won the audience award.
In 2024 she produced her first film Mama's Secret, for which she wrote the script, did a large part of the production and in which she plays the leading role.
Mama's Secret had its premiere at the Cinekid filmfestival on October 31, where she was the youngest filmmaker ever.