What a great article.  I dropped everything else this morning and read it from beginning to end.  Then I bookmarked it.
Couldn't read the article, but Joni had a huge impact on songwriting and Blue may be her masterpiece.  She was and is a complicated person, but I guess most great artists are.  I love the album.
See also IMO Ann Powers NPR article: Her Kind of Blue for a parallel look … with another Blue….