[She laughs. Just wait until he got around to the idea of magic being a real thing. She still didn't quite get it.]

All you really need to know for now is that our prison is a weird place. Really weird.

[As he mentions the Pip-Boy, Sibyll glances down at it, then holds up her arm to show him.]

It's a computer. Keeps track of various things. Also has a Geiger counter in it to keep an eye on radiation levels.