Lucy blinks at Gabe saying Seth lives with him. Slightly unexpected turn. But given how much he was just badmouthing the guy about being an ass, she doesn't expect it to fly by unnoticed, and she nods at his reassurances. At least if Gabriel knows the guy, he'll be easy to track down.

"So what do you intend to do? Make him pay Peter, or make him give the power back?" she asks Gabriel.

Because yeah, she's not asking Peter directly about this. She's fairly certain even if he does regret giving up his power, he's unlikely to admit it was a mistake. Well, unless goaded into it here, he's already pissy from being tricked and from being more truthful than he wants to be, so she won't tempt fate at the moment.