They're both quiet as they walk down the tunnel together. Since Estraeah has a flashlight, Klaus has no real need to use the one on his phone.
Estraeah is the first to speak. "Why did you follow me?" she hisses, flinching at the echo.
Klaus looks over at her, but when she looks at him, he turns forward again. “I got worried. I didn’t mean to yell at you, really, and I feel so bad about it. I couldn’t just let you run off.”
From the look she gives him, Klaus knows that was the wrong thing to say. “You could have, actually.” She starts walking faster, and for the first time, the tunnel narrows. He follows behind her, no longer able to stand by her side.