This brief video on Georgia O'Keefe's life will give you a foundation of who she was, which may help you better understand the reasoning behind her subjects and why she painted as she did.
The bottom line is, don't miss this exhibit!
Go see her work and become immersed in her visionary details. It is like taking a fantastic voyage of shape, color, shadows, and even mystery, as you view some of her art pieces. She is an artist that has allowed us to peek in, and at times, view her very soul. This is a rare gift; very, very rare.