From 2000 to 2002, she worked in the foreign affairs department of President Ion Iliescu's administration, focusing on the Middle East, Asia, and Latin America.
[5] Joining the PSD in 2000,[5] Niculescu-Mizil was elected to represent Bucharest's Ferentari neighborhood in Parliament in 2008,[6] and served on its committees for foreign affairs and Romanians abroad during her first term.
[10] Days later, she resigned from the party, alleging that it was no longer promoting advantages for ordinary people, instead advancing the personal interests of certain of its leaders.
In 2012, she and Vanghelie, the mayor of Sector 5, which included her electoral district, confirmed that for the past year, they were in a relationship that had begun after each separated from their respective spouse.
[20] Oana Mizil is nicknamed Laleaua neagră ("The Black Tulip") after a legendary woman who benefited the Roma residents of Ferentari.