When she, after we go to Githyanki Creche but don't move to act 2 (at least it when I'm getting this dialogue), suddenly going into depression and start saying that her engine condition becomes even worse and probably can't be fixed at all. A couple of minutes ago, she said how she loves life, how her bad live now in the past, and be happy because Dammon fix her engine at least a little and promise to find a solution. But now suddenly she becomes depressed and lost all hope. That's emotional instability. Like she even doesn't know found Dammon solution or no, we even don`t met his second time. But she already sure that engine can't be fixed, even not long ago she had the opposite opinion.