She was still a little lost on a lot of what the man was saying but she understood that. He had thought he was human but wasn't. Cameron may not be the most human of robots but she knew human behaviour, John had made her study it, learn it. She knew what reaction a human should have to learning their entire life was a lie.
It was not a good reaction.
"I'm sorry," she stated. Maybe she meant it, it was always hard to tell with her.