The Question and Answer section for The Crying of Lot 49 is a great resource to ask questions, find answers, and discuss the novel.
I'm not sure at what point you mean in the book. In ch 2 Oedipa visited the bathroom and could not find her reflection. She remembered that the mirror had broken but felt very unsteady.
Two postmodern features of "The Crying of Lot 49" are capitalism and consumerism.
No plot Matthew. By the way...I like your picture.