Crabb's teeth dig hard into her lip to stop herself from making noise loud enough to pass through the door, which only serves to make those noises that come out anyway more obvious. "E-Erin—"

It's patently unfair that Erin can get closer to defining what it is about the idea of being seen or known that's appealing beneath the fear than Crabb could in her own head. Even as she does it's hard to make herself agree, the fluster at the thought is just that hard to break through.