Hasn't she had enough taken off her chest? That's a robot joke. She appreciates that Pen is pushing and doesn't really have plans to... stop offering information. Might as well. What does she have to lose?

"I think so. She learned... something about the organization she was working for. YoRHa." No idea what. "But it made her not ever want to work with them again. So she defected, and she started killing, and she kept killing." She never stopped. She never wanted to stop.

Anna's motions slow, and she leans up against the wall instead. "She must be so tired."