A beautiful woman, filled in both places where women should be. Also highly intelligent, despite her public image. Unfortunately, like so many otherwise intelligent women, she had poor taste in men (Arthur Miller being the only decent one of the lot, if you exclude his pink-to-red politics, which I have difficulty doing).
I think Arthur had problems with her because she didn’t respect herself. I read that she once came downstairs looking for him, stark naked and he got really upset about it. He was in the middle of a card game with friends when that happened.
If she had left the sex kitten in the studio, I think her married life would have been different.