[Sirius has been attempting to cope with the fact that Diva is just gone, and has a nice pile of booze stocked up in her mansion. He's halfheartedly been trying to organise things a bit with Remus' help, and there is a big sign outside the
mansion now that says: "Free Stuff and Free Rooms," because he can't handle how empty it feels, even with Remus there.
On this particular morning, he's suffering from a nasty hangover. So it takes him awhile to notice that something is different. But when he gets around to curing said hangover and realising what's happened, he (she?) curses and storms out of the mansion, still dressed in his pyjamas and looking absolutely livid.]
Alright, who's responsible for this? Even Snivellus wouldn't have stooped so -- no hang on, that's giving him too much credit. The greasy-haired git probably would've, if he could have figure out how.