Bran's distracted gaze returned to her as soon as she spoke - was she actually inviting him to her apartment? It wasn't even said with the fear or reluctance he would have expected, which only confused him further. Usually he had no problem figuring people out, and could adjust his behavior accordingly; but normal things like having tea threw him for a loop. It wouldn't have made sense to anyone but him.
He didn't have tea. He didn't have very much of anything in the sense of sustenance, actually; microwaveable meals or takeout consisted of his daily food intake. "Okay." Bran paused, trying to keep his scarred side turned away from her without making it too obvious. "Thanks." Twelve flights of stairs weren't very appealing, but he didn't trust the elevator; so after another pause he turned and started to climb.