She didn't know how much she'd mucked up at that point, but she was certain it was enough to give him something to think about. When he got to thinking, that always meant he'd get somewhere eventually. She'd been keeping this from him for five years now, so how much longer would it be before he figured out just what she wasn't being honest with him about?
"I'm truly sorry, Eli," because there was nothing else left to be said. He might not know why she was sorry, but she was. She always would be infinitely sorry, no matter if she felt that it was the right thing to do. It still haunted her and now that Elijah Senior had passed away in Azkaban, she was the only one left in this world that held that particular secret and the weight of such a thing was strangulating.