[Naoto thinks she doesn't need more details. That explained it quite well, although now she's supposing the reason Ferid is the 'seventh progenitor' is because his predecessor(s) got killed]

I wouldn't have ever guessed you had gone through a situation like that. The way you have been reacting to everything so far wouldn't have indicated you were uncomfortable about being helpless or seeing people die.

['A vacation'. She hasn't forgotten that's how Ferid is taking it]