Imho she actually did/does not know any more than you or I what went on in that hotel room the day that article you linked was written.
She may know now if her brother has confessed to her.
Fever on Monday - after reports fever had come way down - and she seemed much better - well - harder to conclude infection caused her death on Thursday.
Probably not a big issue - but reports are just not consistent.
Now on that - good night!