This constituted the terror of the poor creature whom the reader has probably not forgotten⁠—little Cosette. It will be remembered that Cosette was useful to the Thénardiers in two ways: they made the mother pay them, and they made the child serve them. So when the mother ceased to pay altogether, the reason for which we have read in preceding chapters, the Thénardiers kept Cosette. She took the place of a servant in their house. In this capacity she it was who ran to fetch water when it was required. So the child, who was greatly terrified at the idea of going to the spring at night, took great care that water should never be lacking in the house.