Hermione's Hex ...

[MercuryBlue]

No: HPFGUIDX 160812

> As far as Marietta knows, no-one who hasn't seriously broken the law
> will ever find themselves on the wrong side of a Dementor.

I don't have PoA on hand at the moment, but didn't Dumbledore hand out 
warnings at the welcome feast against tangling with the dementors, 
because the dementors wouldn't care about friend or foe?

And why wouldn't Marietta have been at, or at least heard about, the 
Gryff v 'Puff Quidditch match that year? You remember, the one where a 
horde of dementors showed up? That can't have been pleasant for anyone, 
and the dementors were the direct cause of one of the players taking a 
fifty-foot fall that could easily have broken his neck, if not killed 
him.

MercuryBlue