You let your collective thoughts rumble around before speaking, more than a little worried about all the bad ways this could play out. You try to keep it easy on your TCP so she can make her own conclusions- love brings teammates together, and she doesn’t need to be enemies with Devil. Just keep an eye on things- while Wax was watching, so were you.
If she does want more direct advice- she shouldn’t be afraid to speak up for herself. Question Devil’s intentions, her motivations here. Speak her mind. You’d back up whatever happens, and have faith in her choices here.
Dad keeps her back straight and head held high, asking what Devil’s game really is. Does she like hurting people, or assuming that people are going to hurt her? That doesn’t seem like a good way to live, and she’d much rather spend her own time hoping for the best, albeit a careful and cautious hope. Friends have far more value to her than enemies, and it’s easier to consider somebody a friend if you know a little more about them, even if they’re on separate sides of the same battlefield.