[It's quiet on her end for a long time and then, softer:]

They can't know we're trapped here, can they? I mean, everyone says you forget when you go home and - that wouldn't work if people there remembered you'd been missing. It's... supposed to be like you never left, isn't it? So - for them, you'd still be there, wouldn't you?

[if she sounds like she's trying to reassure herself as well as him... it's because she is.]