[ Her last comment gets an odd reaction out of him. He tilts his head and observes her for a moment as takes that two ways. For one, she most likely does have potential for her powers that she hasn't begun to tap into. And two, that he has to be very careful about how he trains her to react to a threat.

Let him be the killer. If it comes to that, he'll jump in to spare her from doing what he and his siblings justified way back in their superhero days. That he took much further as an adult than any of them really comprehend. ]

Lucky for you, I can teleport away before you can land anything on me. We'll test what it's like when you don't hold back, and go from there.