[She just lets the cigarette burn down to her fingers, feeling the heat, but not dropping it yet.]
I'm sorry.
[There weren't a lot of options and from the information she had she made what she still thinks was the right one, but she should have gotten more information. She trusted Jack too much and he was being influenced by that pearl. She didn't know at the time, but she could see how he'd changed and she just should have done more of the research herself even if that's what she had the team for.]