He means home. She made it sound as if she was pulled here directly from fairyland. His eyes narrowed when she told him what she'd done. Yes, he understood the severity of what she'd done. He rakes a hand through his hair and resumes his pacing for a few seconds.
"It's good I've arrived then." He is trying not to yell at her, trying not to ask her why she would do something so incredibly stupid. He is trying not to make the situation worse than it is.
"Do you want me to have to take on the entire prison?"
Okay so that was a bit of a dick question, but he would and at the moment, he's fairly certain he's going to have to.