"What do you need boy robes for?" inquires Madam Malkins.
"I'm sometimes a boy," the girl explains.
"What?"
"Look—"
"I didn't know that you would recognize it for sure?" he says. "It picks up different channels, at least, from radios, I'm pretty sure?"
"Makes sense that it would, it'd be weird to have wizarding radio for muggles."
"… I think there were actually a few times where the stations have leaked."
"I don't know," he says. "I think they just had a few people talking about some bizarre hoax, and then we caught wind of it and decided to be more careful with our transmissions?"
"Oh. That's kinda boring." Pause. "But better than anyone having their memories erased."
"It is possible some people had memories erased – the Obliviators do quite a lot of things – but I don't think so."
He shows her the clock! It has some fancy animation on the hour if you set it up to do that – which they usually don't, because it sounds like it could be distracting – but they were fashionable to get a few years ago in his mum's social circle – and then he shows her the hallway and what it looks like outside so she knows what the outside of the house looks like…
The stairs seem like they go quite a ways up, to quite a few different floors, if she looks up while they're in the hall.
Anthony shows her a bunch of them! The house is indeed rather large while simultaneously not being much larger than the other houses around when he shows her outside.
And then: greenhouse!
She is: quite envious of the house. Not that she'll say anything.
Greenhouse!
It has a few plants in it. Anthony shows her the ones he mentioned earlier and a few more. (The rain-predicting plant is a dark green right now, indicating it will rain within the next few days but not for at least one.)
He does not, he doesn't think! He knows mandrakes are sorta-kinda sentient and he doesn't have any of those, and there are some trees (they come in smaller sizes) that can respond to poking and stuff, but… no, he's pretty sure they don't have any like that.
The non-sentient ones don't really do anything in response to Sadde, no – some of them are in fact like very nonmagical plants, not able to move of their own accord – so it would appear not?
"Quidditch is… possibly the main sport that people play? There's the quaffle, that's the main ball, and people throw it between them and through some hoops and dodge some attack balls called bludgers, and they play it on brooms?"
"...a sport on flying brooms that is the coolest thing I wanna play!"
"Hogwarts has quidditch teams?" he suggests. "There are different positions you can play in – oh, there's also the seeker, who catches the snitch, which is a golden flying small ball-thing that nets you points and ends the game?"