"Bien sûr." And if she needs to know what that means, she can ask him later.

Being entirely certain of where she is at any moment is a bit difficult in the vents. Remy knows how fast he'd go if he were in South's boots, so he tries for that fast. Whenever he passes a vent, he takes a moment to look through. Not able to see a lot, and certainly not able to see her, but it also means being able to check that the staffers aren't being alerted.