How does Robert M. Pirsig use imagery in Lila: An Inquiry Into Morals?

In Chapter Twenty-three, the novel's setting dictates the Halloween imagery seen around the city. When Phaedrus makes mention of this imagery earlier in the book, he references the absurdity of the modern symbol of a witch. When we take into consideration the original meaning of an ancient Druid priestess, however, we feel sympathy for Lila. It's at this point, we realize that all we want, is for Lila to make it back to the safety of the boat and Phaedrus..... for her to escape the city.