In 2014, Montaigne was invited to the Central African Republic to become Minister of Communication, Civics, Dialogue, and National Reconciliation in the interim government.
From March 2008 to 2014 she was a Union for a Popular Movement city councillor holding the portfolio for legal and social mediation and decentralised cooperation.
[2] In February 2013 she proposed that the council pass a motion of solidarity with the victims of the Central African Republic Civil War (2012–2014).
[2] Montaigne is a close friend of 2014–2016 Interim President of the Central African Republic (CAR) Catherine Samba-Panza.
Montaigne accepted and flew from Paris to Bangui, the CAR capital, on 28 January – she was still a city councillor at the time.