Mortal death was merely a designated landmark in the circle of life. According to Silko, the law of nature, not the law of men, governs everything. She looked at their faces steadily. Silko uses the spider to represent how the people in the bar sees nature. They are afraid of it, and they hated the spider.
People are naturally afraid of the unknown and usually unwilling to accomodate.
Perhaps it was much more convenient to oppress the Native Americans and subjecting them to white dogma rather than working to understand and accommodate them. This is where two themes collide. Silko parallels Ayah and spider to nature, and the people in the bar is the society. Nature and society are always battling, further more, what sadness or misfortune that the society can inflict on people, there is alway an answer in nature. The inability to speak English, I have been there.