That lift of brow is not missed, and she certainly can extrapolate what is behind it. Instead of incensing her, though, that look and the spine it shows in him has her lifting her brow right back at him, something behind her eyes rising up in a way it hasn't this past while, sparking with challenge but also with a sort of amused camaraderie. She likes that he doesn't lay down to her illogic - even if it is something that is never going to change. She almost smiles.
Her brother is one of very, very few exceptions to her hardheaded rationality, and where Rob might feel that's a weakness, Adelaide can't help but feel like caring for her brother, caring for Sarge the way she does - with her whole heart, foremost before her head - humanizes her. It makes her feel soft, when so often she can tend toward brittle or heartless.
So instead of countering his expression, she listens to his warning, his reassurance, and she nods. "I know you'll be reasonable, darling," she concedes, the hand that's holding the phone brushing fondly over his knee. "That's my favorite thing about you."
But she can already see the little things that her brother will see - phrases like "what he is" and "if he truly cares for you" that will have Jims biting back an urge to throttle her husband. She presses her lips together, and lifts the phone, because this conversation is going to happen some time, and these elements aren't going to change. "Here goes," she says, instead of trying to explain, and hits the button to call her outlaw drug lord revolutionary brother, knowing he is on the other end waiting.