"What do you need boy robes for?" inquires Madam Malkins.
"I'm sometimes a boy," the girl explains.
"What?"
"Look—"
"I like these frogs. And ooh what's this—" She finds a card with an old wizard on it: "Salazar Slytherin."
"I don't think so, but they can talk and act like the person they're a portrait of…"
"O-kay, erm. Are they exactly like the person? Like is the person dead at all if they're a portrait?"
"… You mean, can you have a portrait at the same time as the original person? Yeah, you can have them together, I'm pretty sure."
"No but I mean are they—okay, I guess if you can do that—it's weird, are they the same person or what?"
"Like I say, I'm pretty sure it's not a person. Just. A portrait. But that doesn't sound like– what you want."
"… Same way the clock talks and isn't a person? But a bit more advanced?"
"The clock talks? ...do portraits just, like. Say the same things all the time, or what? Can you talk to them?"
"– Didn't I mention that you can make the clock say the hour, on the hour? I think it's just like that, but – the portraits respond to speech instead of time passing?"
"… It's probably more complicated to make the magic thing respond in a way that makes sense?"
"… Talk? If you just mean speak without being spoken to? They talk with other portraits, sometimes…"
"… I'm not saying you should treat them badly or anything? I'm just pretty sure they're magic pictures that are made using magic, not – you know, animals but smarter."
"Why would them being magic pictures made using magic not make them people?"