She had been very uncomfortable that day. [He'd managed to trigger an uncomfortable Echo from her himself then. And then he'd promised not to bring it up later because it had upset her so much and he wanted to make sure he'd still been welcome at the apartment.]
How did you ascertain that? [Nathan, honey. You have no idea what you've just asked.]
Action
How did you ascertain that? [Nathan, honey. You have no idea what you've just asked.]