He really is the worst at this. She sounds distressed, though of course she's putting a brave face on it, as is her wont. He, too, stops construction for a moment, to look at her seriously, and conveniently ignore responding to her statement directly. The snake is a spooked heap in the little coat-hut, Sraif peering down at him with exaggerated avian head movements, normally hilarious, now concerned. What is even the cause for her upset? Does she assume she wouldn't be able to go back to her own universe? A potentially reasonable assumption; she was dead, and also her universe sounds rather inhospitable. But it also sounds like it might be important for her to go back for other reasons. Who hasn't been there? Things you'd rather do, but the universe needs you in place with all the other cogs and gears, what a hassle. But it's a little easier to negotiate with the cosmos, when you have a time machine. And she'd need a fighting chance of some kind. "Callie. Do you not want to go back to your own universe some day? It wouldn't have to be immediate." Though it might have to be permanent. Universal boundaries can be quite the sticking point. But she seems pretty at ease with time shenanigans. It was apparently a Thing. Lots of things sounded like they were Things. Pretty confusing, even for him. "Wouldn't matter when. Time machine, and all." Because that strategy always never fails. At least on paper. "I know you want to help your friends."