In 2006, she made a film about her father L’atelier de mon père, sur les traces d’Edmund Alleyn; the film was named best Canadian film at the International Festival of Films on Art [fr] in Montreal and also received a Prix Gémeaux. She directed the 2010 film Dix fois Dix about painter Otto Dix, which received the Prix Tremplin pour le monde ARTV.[6]
In 2018, she directed and produced Impetus, a hybrid drama feature described by Denis Villeneuve as " Playful like a Godard or Varda film. Brilliant and moving". The film premiered at Slamdance, Utah and Torino, Italy. Alleyn was awarded the 2019 PRIX CREATION, by the Observatoire du Cinéma au Québec for "her outstanding contribution to Quebec cinema".