She obtained a degree in business translation from the Higher Trade and Language Institute (HHTI) in Genk and worked as a sales executive for a furniture company.[citation needed]
In 2009, Ponthier became a member of the Chamber of Representatives. She continued to hold this position until 2014. In the 2014 elections, she was a candidate for the Flemish Parliament but was not elected. She subsequently became a political assistant for Vlaams Belang. She was also a provincial councilor for the province of Limburg from 2006 to 2009, and has been a municipal councilor of Bilzen since 2007.[1] In addition, she was in 2011, president of the Vlaams Belang in Limburg[2] and a member of the party executive board.[3] In the 2019 elections, Ponthier was the leader of the Limburg Parliamentary List of Vlaams Belang.[4][5] She was re-elected to the Chamber with nearly 27,500 preference votes.[citation needed]
In 2020, Ponthier received a letter containing a mysterious powder substance along with the VB's leader Tom Van Grieken. She was given police protection as a result.[1]
