Anna didn't expect that Broke will remember their talk last night about sending her family to jail first and then talk to talk more about Ivan. She couldn't negosastionate with Brooke, even though she understood why she wanted her parents in jail, some stuff didn't make sense.
The first one was, why Brooke didn't expose her family herself? She knew that she was skilled, but she didn't know how skillful she was, but still why she didn't expose her parents?
The possibilities for this could be that she still has some feelings for her parents, or she doesn't have the proves of their crimes by the lack of skills or even manpower.
The second one was how Brooke was talking about Ivan himself. She was talking for him like a father figure and role model of hers.
If that was the case, wouldn't that mean that Brooke was his ally? Also, Anna was feeling that Brooke was trying to stall... for something, like she was trying to buy some extra time, but for what?