[Not knowing means she might not like his immediate answer. He shakes his head, unconsciously calling for the Crystal's pull - even if it isn't here, something responds. His whole body pulses with a soft blue glow, lighting up in the dark, there and gone again in a second.]

You're fine where you are. My power's mostly reactive, though- can you throw a punch?

[A beat, before he realizes how that might sound, and then-]

Or- throw something, either's fine. I promise it's safe.