He watches his mug freezes and then heaves a sigh that sounds long suffering, but is actually mostly amused and... nostalgic. He misses Bobby. "It's always my coffee..."

He stops there, though, without explaining further. "In that case, my 'thing' is converting ambient radiation into concussive force and discharging it through my eyes."

He's not making guesses about why. Not important, or helpful right now. Especially if she doesn't have any idea or isn't willing to admit that she does.