[Wirt catches the past tense, all of the "had"s and "were"s, and knows immediately that what happened to her brother is much more serious than what happened to Greg. If everyone is right, Greg will be there when he leaves Wonderland. It sounds like that's not the case for Cami and her brother.]

...I'm sorry.

[It's quiet, but genuine. He does feel a little bad for freaking out so much about Greg in front of her, but it's not why he apologizes. He can't even imagine what losing a twin would be like.]

That must have been hard though. I mean...y-you can't just flip a switch and suddenly stop blaming yourself for stuff, right? Life just doesn't work like that. I mean, people think it does - that if they tell you it's not your fault enough that it just clicks eventually. But they don't get that you can kind of...you can know there was nothing you could have done without really...believing it. Like, you look at it logically from every angle and still go "well, I couldn't have done anything to change it, but it definitely feels like it's all my fault and I should probably just crawl in a hole forever now".

[He knows all about that feeling, even if he's never had someone close to him die before.]

I guess what I'm saying is...I-I dunno. Things like that are kind of beyond anyone, but...I'm glad you got to that point, eventually.