If I imagine it as what it'd be like to lose my ability to perform magecraft, it would be earth-shattering.

[She looks both disturbed and sympathetic as she says this, only to shake her head. If he didn't want her to be here, Rin assumes he would tell her to go, so she doesn't feel bad about prompting him.]

With the dazed way you're talking, though, I take it there's more to it than that. [She gestures back at the bed he rose from.] Why don't you sit?