[Hearing her use his name, he's snapped out of his panic but still remains as close to the door as possible. He quickly thinks through how he's still seemingly in his own world and luckily Ib is not here and therefore (hopefully?) not in danger. It's just him and Mary. Right. He swallows.]

How did you even... This is impossible! You're Mary, aren't you? But you're one of Guertena's paintings! How is it you've come here?!