There is nothing that is not strictly logical about this.

It is in vain that mirrors are banished from the convent, women are conscious of their faces; now, girls who are conscious of their beauty do not easily become nuns; the vocation being voluntary in inverse proportion to their good looks, more is to be hoped from the ugly than from the pretty. Hence a lively taste for plain girls.

The whole of this adventure increased the importance of good, old Fauchelevent; he won a triple success; in the eyes of Jean Valjean, whom he had saved and sheltered; in those of gravedigger Gribier, who said to himself: “He spared me that fine;” with the convent, which, being enabled, thanks to him, to retain the coffin of Mother Crucifixion under the altar, eluded Caesar and satisfied God. There was a coffin containing a body in the Petit-Picpus, and a coffin without a body in the Vaugirard cemetery, public order had no doubt been deeply disturbed thereby, but no one was aware of it.