Brand knows how she left. The ones who "forced" her resignation know. The truth of a resignation doesn't always come out. Hence, the term resignation over fired.
"Fired/forced" refers to the subject either being fired or forced to resign.
You won't "find" anything on her being forced to resign unless she wants you to. Until then, the fairy tale lives on.
This is a very common thing.
Easy peezy.
Bagster