She just realised what he said what he really said

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Uremettu: I need to check out a copy of The Spirit of Nirn Mater Urag.
Urag: You make sure this book gets returned in the same condition it was checked out in.
Uremettu: You sure take your job seriously Master Urag.
Urag: Of course I do if I didn't most these books would have been dissolved or burned to ash before the Third Era!
Uremettu: Yeah ok Master Urag (starts to walk away with book and does her best Urag Impression)
Uremettu: Been burned before the Third...wait is he serious? But that means he's been around since at least the Second....oh man Eleanore wasn't kidding he may be immortal!
Uremettu: Doesn't he call this place his little corner of Oblivion (looks back at Urag who looks back at her with a knowing look and wicked smile) Um Master Urag I'm uh gonna read the book back at the Hall of Attainment in my room ( mumbles to self make sure to have lots of wards up!!!)
Urag:Fine but bring it back in pristine shape or I'll you torn apart by angry atronachs.
Uremmettu: Yes sir!!