Gadriel feels like fighting, but maybe not against someone he's supposed to be an ally with. "If it becomes a problem, I will not hesitate to cut you free." So, yeah, prepare to lose the braid if he thinks it's becoming a problem. You're free to make tactically stupid decisions; he's willing to save you from your tactically stupid decision. That's what brotherhood is about.

He tilts his head. She looks about regular Astra Militarum size. "It should not be a problem. I can fight one-handed if need be." Because obviously in his mind he's going to be saving her ass, and not the other way around.

"You seem to know where to find these creatures. Let us go." He is having some Personal Issues that he thinks are best resolved by Murder Therapy.