[His eyebrows lift a little.]

It's as dangerous as you decide to make it. Unless you're planning to take a turn for the maniacal, I'm not particularly concerned.

[That can of an ability untrained could be a problem, but she seemed aware enough on her own. No reason to rub it in.]

So okay, intuitive understanding of energy in general and how to manipulate it. I can see where you'd be wanting exact numbers.