Hawking could feel the tension rising with the mentioning of a person named Jack, and as much as he wanted to know, he wasn't going to put them through pain just so he could know. He assumed that he would find out in time, and they'll tell him more once they've put some more trust into him. "Maggs floated over the water until you could get her? So she didn't ever touch water." He wasn't really sure how she could just avoid acting out when coming into contact with water, but since he didn't fully understand her power, he might know more once she explained it.