[ He remembers having a conversation about that a few weeks back, so he has an educated guess. That Jericho is passing the powers through to her, and so... ]

My guess it's from Jericho. Where he gets all of the powers or weapons himself is pretty much a mystery to me--it's obvious he has some kind of source he's able to draw them from, though. Whatever or wherever that is I wouldn't have a clue.