You’re right of course when you look at the character’s long term history, but I was just referencing the nature of her action in the context of that one episode. It totally shook me as I wasn’t expecting them to write her out with such finality at this point in the series. As an aside, I have known a couple of people who committed suicide, and even knowing their mental histories, their deaths came as shocks. Knowing a person’s mental state is no predictor of their actions as I have also known people who were far more depressed than the suicides, yet they refused to give in to their despair. Only God knows why some make one choice and others make a different one when confronted with similar problems.
Within the episode it does kind of surprise you, they get you thinking maybe Dee and Lee will get back together and BAM. Then you think and remember and it all makes some sense. Also the walk through scene of Adama helps, really does show that everybody is falling apart, hope has been removed.