[Frumpkin sniffs Tango, meowing in return. Hello there.]

I'm fine. ... I need to keep going. We need to find out what is at the end of this. It's... something that even the Conductor didn't reach. We have to find it...

[There's a shaky, slightly unhinged note to his voice. He's not looking at her or McBurn, he's looking past them to the rock.]