How are there more of them around his chest? How did they get around his chest in the first place? He may think these things are purely mechanical (mechanical how? They don't even have moving parts!), but it's pretty obvious there's magic afoot here.

No use dwelling on it, though. With her hands tied she can't check, and so she'll have to trust that he's right and they can disappear right out from under their bonds. "Okay," she says, shutting her own eyes and taking a deep breath. "Remember, don't try to resist. I can only do this once."

Thank the light she doesn't have to move her hands for this one. Focusing inward, she begins loudly reciting an incantation in a language Rush won't recognize -- and a few words later, they both abruptly disappear and reappear in the same positions on the other side of the room sans laptop cords.