Complex sentence: Ku made her official debut as a director through her short film "The Madonna", centered around the topic of assisted suicide, debuted at the 2009 Puchon International Fantastic Film Festival.
Split into simpler sentences: Ku made her official debut as a director through her short film "The Madonna". The film which was centered around the topic of assisted suicide, debuted at the 2009 Puchon International Fantastic Film Festival.