Something that people don’t understand about her, is that what you see in her behavior is the results of having much of these lyrics be autobiographical in nature.
When you review most of her more notable self-destructive behaviors and episodes, take away any bias towards “TMZ” rock star cliche’, the connections can become quite clear. Can a person convincingly fake the kind of experience that inspires such lyrics, and rage in performance? Through so many songs? What would Freud say?