His frown deepens at her next words. He'd been careful not to hope that he could just shoot off the moment he got her back, but that her situation is so precarious as this worries him terribly. But hopefully with her systems to help, he can be more useful himself, and they can improve their situation, get them both back to where they're supposed to be. He gives her some wordless reassurances that they'll get through this together.

The sight of the blue box lightens his mood again considerably, though. It's a very welcome view. "Ahh, there you are!" he says excitedly, letting go of her hand to run up to her other form, digging his key out of his pocket as he goes.

He gives the box a friendly stroke when he reaches her, and fingers the sticker on the door. "Very retro," he comments with a smile, unlooking the door and going inside.