This isn't the back.
But that -
No, he's too tall to be Mial, if this is a Mial prank it's a stupidly elaborate one.
"Okay, I give up," she says, "what the hell?"
"...So... your assertion is that you currently are Solvei, foundationally, in a way that I am not correspondingly Miles when I am Miles?"
"And, by whatever means you might have been created, it wasn't for a clone substitution plot targeted at your original. Because she has been dead for two centuries."
She goes back to the door and opens it. Not quite leaning through, she calls, "C'mere, I found a weird and potentially useful thing!"
Blink.
"...It's a magic mirror? With really good aesthetic taste?" she guesses.
"Apparently all the short boys are me," Solvei mentions, "except for that one," she gestures to Mark, "who's apparently Sis. And they kept asking me intrusive personal questions I don't want to answer. Maybe yours will be better behaved."
"I will ask you plenty of personal questions, but I think you will mind less. It's a pity you missed the other two of us."
"They also claim to have varyingly portable magic. I'm not sure how much I trust them."
"...Well, how me are you? For example, is your name also Isabella Marie Swan, because if it is we have to think of something else."