The OP said in a later post "Imagine someone sent you a very friendly pm saying something like 'are you the wife of the famous actor 'xyz'- but don't worry I'll keep stumm. and you replied 'yes I am, but please keep it to yourself'. And then several posters make allusion to this piece of information, which is totally irrelevant to whatever is being discussed, again and again." which gives hints to what kind of information WAS given to one particular poster.
If *Fleurpepper genuinely didn't want the secret passed on, the simplist and most effective way to stop any rumour would have been to answer, "Good grief! Not me! You've got it wrong there." That would have stopped it in its tracks - whether the rumour was true or not. However she told one person, and we all know that when you tell one person a secret (particularly a stranger) they only tell two very good friends, who each only tell two very discreet acquaintances etc etc.
Then she makes a great fuss about broadcasting to the whole world, via GN and the internet, that someone has revealed her secret life. She doesn't begin by asking GN to get the references deleted - which would have minimised the spread - or contacting the perpetrators.
Somehow, I think the lady doth protest too much. The louder she shouts, the more ears will hear that she has a secret, which she is not going to reveal to them, so there!