[He still grins for that glare. But he hears the way Keith talks to the lady and puts a hand on Keith's shoulder.]

Then there's some good news - if you feel that bad about it, you might be able to help the plant grow a bit.

[He points at it with two fingers.]

I can't of course 'cuz I didn't burn it so I don't feel as bad as you do, but if you concentrate on the plant... maybe you can fix it for the nice lady here.

[He winks at the woman just to try and placate her a bit.]