Task: Question Answering
Input (English): Passage: In 1883 Fauré married Marie Fremiet, the daughter of a leading sculptor, Emmanuel Fremiet. The marriage was affectionate, but Marie became resentful of Fauré's frequent absences, his dislike of domestic life – "horreur du domicile" – and his love affairs, while she remained at home. Though Fauré valued Marie as a friend and confidante, writing to her often – sometimes daily – when away from home, she did not share his passionate nature, which found fulfilment elsewhere. Fauré and his wife had two sons. The first, born in 1883, Emmanuel Fauré-Fremiet (Marie insisted on combining her family name with Fauré's), became a biologist of international reputation. The second son, Philippe, born in 1889, became a writer; his works included histories, plays, and biographies of his father and grandfather.Contemporary accounts agree that Fauré was extremely attractive to women; in Duchen's phrase, "his conquests were legion in the Paris salons." After a romantic attachment to the singer Emma Bardac from around 1892, followed by another to the composer Adela Maddison, in 1900 Fauré met the pianist Marguerite Hasselmans, the daughter of Alphonse Hasselmans. This led to a relationship which lasted for the rest of Fauré's life. He maintained her in a Paris apartment, and she acted openly as his companion.
About this time, or shortly afterwards, Fauré's liaison with Emma Bardac began; in Duchen's words, "for the first time, in his late forties, he experienced a fulfilling, passionate relationship which extended over several years". His principal biographers all agree that this affair inspired a burst of creativity and a new originality in his music, exemplified in the song cycle La bonne chanson. Fauré wrote the Dolly Suite for piano duet between 1894 and 1897 and dedicated it to Bardac's daughter Hélène, known as "Dolly". Some people suspected that Fauré was Dolly's father, but biographers including Nectoux and Duchen think it unlikely. Fauré's affair with Emma Bardac is thought to have begun after Dolly was born, though there is no conclusive evidence either way.During the 1890s Fauré's fortunes improved. When Ernest Guiraud, professor of composition at the Paris Conservatoire, died in 1892, Saint-Saëns encouraged Fauré to apply for the vacant post. The faculty of the Conservatoire regarded Fauré as dangerously modern, and its head, Ambroise Thomas, blocked the appointment, declaring, "Fauré? Never! If he's appointed, I resign." However, Fauré was appointed to another of Guiraud's posts, inspector of the music conservatories in the French provinces. He disliked the prolonged travelling around the country that the work entailed, but the post gave him a steady income and enabled him to give up teaching amateur pupils. 
Question: What was the full name of the person who acted openly as Fauré's companion?
Output (English): Marguerite Hasselmans.