[Hellboy watches Riza, unsure how deeply he should get into it. He could just brush it off, give her some vague reassurance, and leave her feeling better about the whole situation: the weirdness of sudden powers that may be impossible to control.

But that isn't his speed. Not with Riza, anyway, who's always been blunt and straightforward with him, as far as he knows. She deserves the same from him.]

She never learned. [Riza isn't looking at him, but Hellboy cups his hands toward each other, miming a sphere between his fingers.] It's something inside her, like... an energy, I guess. She tried to get rid of it once -- dumped it all into a walking, talking battery -- but without that energy, she couldn't live. It's as much a part of her as she is of it.

[Symbiotic energy of massive destruction, in other words.]

So it could be worse.