François Seurel, who has now become a school teacher like his father, finally manages to find Yvonne de Galais and reunites her with Meaulnes. Yvonne still lives with her aging father in what is left of the old family estate, "Les Sablonnières", which is closer than the two young friends had first imagined in earlier years. Yvonne de Galais is still single and confesses to Meaulnes that he is and has always been the love of her life. Yvonne de Galais accepts, with her father's blessings, Augustin Meaulnes' marriage proposal. However, the restless Meaulnes leaves Yvonne the day after their wedding in order to find her lost brother Frantz (to whom he had once promised to help) and re-unite him with his fiancée Valentine. Yvonne remains at the château, where she gives birth to a little girl but dies two days later. Eventually François lives in the house Meaulnes and Yvonne lived in and raises the little girl there, while waiting for the return of his friend Meaulnes. While looking through old papers François discovers a handwritten diary by Meaulnes. During the years in Paris (before François brought Meaulnes and Yvonne back together), Meaulnes had met and romanced Valentine, the fiancée who had jilted Frantz on the night of the party.