Book Reports / Thousand Splendid Suns Vs The Colour Purple [4]

I need some help brainstorming and would like some ideas on how to organize my essay. The essay will revolve around inner strength of women in both of the books. I am thinking I will be talking about how challenges give women the strength to endure and also how the women form bonds with other women (Laila and Marium, Celie and her sister) to draw inner strength. I will really appreciate it if you guys can help me out a bit with the brainstorming phase. Thanks!