Cosette learned that she was not the daughter of that old man whom she had so long called father. He was merely a kinsman; another Fauchelevent was her real father. At any other time this would have broken her heart. But at the ineffable moment which she was then passing through, it cast but a slight shadow, a faint cloud, and she was so full of joy that the cloud did not last long. She had Marius. The young man arrived, the old man was effaced; such is life.
And then, Cosette had, for long years, been habituated to seeing enigmas around her; every being who has had a mysterious childhood is always prepared for certain renunciations.
Nevertheless, she continued to call Jean Valjean: Father.