First divide the questions up and give a paragraph to answer each:
Discuss the way Irene and Clare confront demands of "Safety" versus the appeal of "risk."
Are there sexual dimensions to this struggle?
Who wins/survives this passionate battle that involves race, sex and class distinctions?
Has Larsen constructed a satisfying conclusion?
For each of these, give a topic sentence and then elaborate and give examples to extend that sentence into a whole paragraph. When you have responded to these 4 questions, you'll have 4 paragraphs already. Include a quote or citation in each paragraph.
Then, you will see that a theme has "emerged" in those paragraphs. Go back and write an intro to express the main theme. When you do everything one step at a time, it is easy!
For good sources online, you can look at google scholar or findarticles.com, or you ca just do a search for the name of this book and see what other people have written about it.