[Blushes a bit.] I know that I get angry at Heiji for stupid things. It's...somethin' we just do.
And what he did... [The blush fades and the sad look returns.] He...
[And then it's angry.] Agh! If it didn't feel like kickin' a puppy, I'd have given him the hits he rightly deserved! He was supposed ta be one of the sane ones because we got the new people! And yet he let himself get all angry and did something so STUPID and WRONG!
[...she doesn't know about your other trauma yet.]