Young, beautiful, and trained in the ways of goddess pampering, the wood nymphs were semi-divine women who lived in valleys, forests, and springs. They could often be found partying with Pan, fending off the advances of Zeus, or hanging out with Artemis in her downtime. In this myth, Ovid notes that the nymphs are charged with undoing Artemis's sandals, combing her hair, and pouring cool water over the sweaty goddess.
Although the nymphs aren't chaste themselves, they jump to protect Artemis' modesty when Actaeon enters her secret grotto. They're nothing if not loyal, you know?