Tim isn't wrong. Cissie is not happy with him, although to be fair to Tim, she is not happy with much of anything right about now. She hasn't been happy since watching the executions, and it doesn't seem like that's an emotion she's going to be feeling any time soon. She's sick, and scared, and angry, and if she is mostly scared, well. She thinks she has reason for that. Tim and Jason are the most important people in her life, here or otherwise, and she knows them too well to think that they're going to be able to just lie low and stay safe until they can all get out of this stupid city and go--somewhere else.

It's easier to be angry and irritable than to sit in her fear and anxiety. She knows Tim and Jason are okay for the moment because they've answered her messages, but she's still left alone in the dorms to stew in her own emotions. She's paced, and screamed into pillows, and baked more cookies and muffins than a person or three can reasonably eat in a week, just to pass the time, but eventually she returns to her room and sits on her bed, trying and failing to read while she waits for one or both of them to come find her.