[She has a shawl and a blanket covering her and yet she feels a chill remaining over her. The blanket is tightly drawn around her shoulders.]

... I'm sad because... I had to see someone I care about die.

[Ai admits it easily because she's already made it clear that she would worry about his well being.]

And I'm sad because...

... You were happy right? Even in the end, you were able to find some happiness in your life, weren't you?