Yes, em. But she posted as if it were fact, not a guess, or a could be.
If Noddy, Big Ears and Golly were alive and well they could sue me if I said: Noddy, Big Ears and Golly enjoyed a threesome last week - ONLY if it were untrue AND damaged their reputation. If it were true, no sue. If all three were commonly known to be homosexual, inter-species lovers then no damage to reputation.
They could not sue me if I said: I think Noddy, Big Ears and Golly enjoyed a threesome last week.