I've just finished and uploaded the translation of the radio program, "All Night Nippon". Though it was broadcasted about four years ago, I believe it's one of the most important articles to understand her. And I've sometimes thought it very regrettable that foreign fans cannot read it, while every Japanese fan can read it very easily in a fan site. It is quite rare that she is talking about her past and her private life so openly. And it is quite rare, too, that a mere radio program is so impressive. If you find any unnatural parts, please inform me.
LINK