[1][2] After leaving school, she joined Présent newspaper under the direction of Jean Madiran.
In 1995, she was sentenced by the Paris Criminal Court for “racial public defamation” following an article she had written.
[5] Parmentier suspended her journalism career in 2018 to support Marine Le Pen's campaigns.
[6] During the 2019 European Parliament election she acted as Jordan Bardella's campaign coordinator and media strategist.
[7] For the 2022 French legislative election, she contested Pas-de-Calais's 9th constituency in the National Assembly and won the seat in second round defeating incumbent Marguerite Deprez-Audebert.