If he hadn't grabbed her, Anna would have just left. She's got much more to worry about right now, and she just doesn't have time to stick around. As it is, the hand on her wrist is enough to get her to pause for a second.

"What do you mean, 'what's up'?"

And there is definitely something up. She's normally so together, but she's all but given up on that. She's a mess, there's no way around that, and she just frowns at him for a moment. Right now, things are okay. Right now, there isn't dead people screaming guilty obscenities at her. "Things are fine."