How mainly does Hurtson's description of dancing to jazz add to the development of the essay's theme?

Initially viewing the white tourists as the actors she is watching in a performance, Hurston herself becomes the spectacle, singing and dancing for the tourists. They pay her dimes, assuming that she is entertaining for money, but in fact she performs out of an inherent joyfulness. In an instance of situational irony, Hurston says that someone would have to pay her to stop.