Well, the jig is up. If her House mates had any doubts about Sadde, they're gone.
...kinda. She's still young enough and androgynous enough that most of them think it's just a matter of changing her hair a bit and maybe some makeup and differently cut robes. It's not a belief that stands a whole lot of scrutiny, but given that most Slytherins give her a fairly wide berth, there's not actually been a whole lot of scrutiny.
She did find the Hufflepuff boy she spooked and tell him about it and offer to help him with his Potions homework. He was quite bewildered and suspicious because Slytherin so he didn't accept her help, but she told him to watch who she hangs out with so that he'd see she's Not Like Other Slytherins, and eventually he agreed, unable to see any way this could be a cunning plot. Which just goes to show that some people really couldn't be Slytherins.
Presently, it's Sunday, and Sadde would really like to talk to a certain Hat, which means she needs to talk to a certain Headmistress, and she suspects the most likely place she'll find her is the Head Table, at one of the meals. Breakfast is the first of those! Is McGonagall there?
"Yeah," she says. "That's a job I could take if everything else goes wrong, I guess."
"It kinda does, but more as a hobby than as anything I'd do for a living."
"I wonder why the professors don't make more use of teaching assistants."
"Well, there don't seem to be people lining up to work here. Or do you mean like students doing it?"
"Students. Sixth years, probably, the seventh-years have to study for NEWTs."
"Hmmm, yeah, I dunno. Maybe the students just don't care enough?" she shrugs.
"You'd think at least the core subjects would have it. Flitwick must be drowning in work."
"It's someone who's identical to you but isn't a twin and wasn't born at the same time as you and they're artificial."
"Like an identical twin where one was paused for a long time and also wasn't made in the first place until after the long time had passed."
"So that one can teach classes while the other's resting and vice-versa, of course."
"It's not how clones work either - and mostly clones don't work; they could but nobody really does it - but there are a lot of dumb stories about clones where they work that way."
"If it was a really good clone and cloned the brain too then they'd know everything the original knew, too."
"No, it wouldn't. You'd have to do something else in addition to cloning."
"That's why I said cloned the brain too! Like, instead of just copying the genes, you'd copy the person as a whole!"
"Anyway, I don't think there's a copy of Professor Flitwick helping him grade papers."