Dumont, a member of the club liégeois the front Porch, has participated in two European championships with London in 2016 (eliminated in the series of the 100m free and the 4x100m relay free women) and in 2018 in Glasgow (removed in series of the 50m free and relays 4x200m free ladies, 4x100m free mixed 4x100m medley mixed).
In 2017, the Euro junior Netanya, it has earned the money with the relay, 4x200m free and bronze with the 4x100m free.