"Kara, you want to stay? Okay, you're in charge of babysitting. Sam? He's in charge of ... morale."

I didn't think about it before, but she would TOTALLY think that it was her fault that the cylons found them.

Also, (according to RDM? I can't remember) didn't she join the military because she couldn't do the pyramid thing? So she lost what was important to her and found a substitute. Now, with the military doing little more than, well, babysitting, she lost what she had and found a substitute. (And FWIW, I think the better of the two options presented, especially considering Sam.)