It's just been a long day. [ she blurts out in defense of herself, but it sounds weak, even to her own ears. he's right, though -- it's an unpleasant nagging thought that pops up every so often, a little more aggressively here, and he isn't the kind of person to offer her platitudes, which is the last thing she wants.]

Inuyasha got caught because of me earlier, and now this..... [ she bites her lip, avoiding his eye a little even if she keeps just as firm of a hold on his hand. ] I don't know. The.... that guy was going to kill someone, so I.... I hurt him, but.... I couldn't even really do that. The way I am, I'm a burden to the team, but I.... I don't know if I can....

[ she knows he's probably killed people before, and he's so calm about this he must be used to it, to some degree, so it feels stupid to say all of this aloud, but she can't vocalize it any less childishly. ]

... I don't want to hurt anyone. [ she might sound like she's beating around the bush, but it's relevant. ]