It was almost homely, Avi would reflect later, the tunnel at the end of the cave. Like a homely military air raid shelter, like a space inhabited by people determined to make the best of a difficult situation. Paintings, stained glass, a mail slot. Not cold, either.

Avi was not thinking about this at the moment, of course, on account of she was too busy being relieved to be alive on the other side of a locked door from the monster that would definitely have eaten her.
She sighs a big sigh of relief, sighing.

Then, suddenly, a cry of angry words fills the corregated metal sheet-lined hallway. "What on the ten planets are you two doing being in the hall right now? It's the first Friday of the month, you know you're not supposed to be out in the hallway after opening today!"