It could be the fact that she believed it was a 'one-off', something that he was deeply apologetic about, entirely out of character and he treated her with respect and dignity (afterwards, naturally) and gave her a monetary opportunity to get on with her life; as an apology and a gesture of goodwill but naturally, a man in his position, yada, yada....please sign this disclaimer.. etc. etc. And then she reads that he's under investigation for doing it again and realises that there are possibly more victims of his out there and now and berates herself for keeping quiet but recognises that with the support of the #metoo movement a group of women can provide the sort of pressure on a serial, celebrity abuser that a lone voice can't?
Just as likely.....