I can tell you this -- she is a classic. She truly is the last great Hollywood Diva (Vanity Fair magazine called her as much in a feature story several years back).
She made her films. She wanted to do it her way. Legendary film boss Louis B. Mayer wanted to do it his way. So she told him to, um, take a hike. And she left Hollywood behind forever.
But, believe me, she continues to do it her way ...