[Claire doesn't react right away - in part because she's not entirely sure what he's doing and in part because she's at least a little sure about what he's doing and, on some level, it's admittedly kind of funny and she wants to see if he'll actually go through with it - so that when she does finally notice that he's crouched down, she's already a few paces ahead of him. She doubles back, standing in front of him.]

Right, but not since we've established that you definitely - [And this is accompanied by her fingers twisting in his shirt and a yank: an attempt to get him to stand back up.] - don't heal on the spot. I really don't want to end up being the one taking you to the hospital for a broken toe or something.

[There are people there she wouldn't want to have to explain that to, for starters, and she's never exactly taken great pleasure in watching other people mutilate themselves. Well, depending on the person. She could probably sit and watch Sylar carve out his own eyeballs and only ever stop him to ask if she could help. That doesn't take away from the fact that she's not going to just stand there and let him kick a rock just to prove a point.

She will at least try and stop him. If that doesn't work, then who knows? Maybe he will miraculously regenerate.]