As her final act Lily seeks to affirm the worth that she now realizes women have, and to encourage other women to believe in their own worth—and to do this through language and
nu shu in particular. It's implied that Lily dies after the close of the novel, but we see at the end that she finally realizes that the world isn't so black and white as she once believed. Her stories come from men and women; her thoughts are masculine and feminine. She wishes to impart these lessons to the reader as a final good deed.