Self-created.
Excuse me?! You’d never say anything such cruel words to someone fighting cancer or another disease. She brought it on herself? By doing so much so well under such pressure for so long you mean? By doing things no human has ever done — repeatedly for years in the public eye, after being abandoned as a child and sexually abused?
There is no such thing as “mental” illness. It is excruciatingly physical, and public ignorance about it is similar to previous ignorance about other diseases and illnesses.
I would never wish an illness on anyone, but a small taste of it with you or a family member might give you, if not compassion, perhaps reduce your certainty about something you know nothing about.