Her character is never named; however, in the Shoujo Cosette anime, the Factory Girl is named Zephine.
In the 2012 movie, the Factory Girl is portrayed by Kate Fleetwood.
She is responsible for stealing Fantine's letter from the Thenardiers and reporting her to the Foreman, subsequently resulting in Fantine being sacked from the factory. She feels scornful towards her and accuses her of being a prostitute. Like Fantine, she works at Jean Valjean's factory in Montreuil-sur-Mer and in most productions, this is either a beads or a glass factory. Generally, she comes across as a mean-spirited person.