What obstacles are presented for Cheryl as she makes her way along the PCT in Chapter 9: “Staying Found”?

Having left her ice ax behind due to her belief that she bypassed all of the snow, Cheryl feels unprepared to handle the snow. To make matters worse for Cheryl, the snow is covering up the PCT and, for the entire chapter, she is hiking through the snow with only a small idea of where she is, hoping that she is still on the PCT.