Her Master's degree thesis, La justice des mineurs en temps de guerre.

[2] Since 2011, Peltier has worked as a project leader[3] at Be-Pax, the French-speaking section of Pax Christi, on intercultural issues, organising discussion groups[4] — notably on the Syrian Civil War and on the Middle East[5]— and had published articles on the internal journal of the association.

[15][16] She has published various contributions in medias such as l'Obs,[17] l'Express[18] and Le Monde,[19] and has appeared on the TV show 28 minutes.

[20][21][22] Peltier argues that since the September 11 attacks, conspiracy theories have taken hold in collective fantasy and are becoming prominent in Western societies.

[6] « Conspiracy theories, with their very problematic ideology, hijack legitimate questions into something perverted and damaging, but the intention is sound ».