Nourishing was one of the rats involved in Maurice's get-rich-quick schemes. She was a young rat who'd been Changed like the rest of The Clan. She transferred out of the Light Widdlers into Darktan's Trap Disposal Squad. An impressionable rat, she thought traps were easy but was proved wrong when failure to deal with one led to Darktan feigning death. Once revived - and suitably chastened - she became a loyal follower of his.
She was there when Darktan really did get caught in a trap. The wounds he got, and what he told her led her to practically worship him and spread the word that he had faced down the Bone Rat.