You mentioned your own depression, KAW, so you know how crazy your thoughts can be.
Wanna know why I think you feel good right now? I think it's because what you read in her journal shows that she has enough of a grasp on reality to recognize what's real and what isn't.
When I went through my depression, I sometimes had an hard time distinguishing between the "crazy" thoughts and the real ones. One thing that kept me going was remembering my W's own burnout. I remembered her telling me, "I don't wanna go crazy!"
I didn't have a clue what she was talking about until I experienced my own depression. Scared the krap outa me, but the realization that she came out of the tunnel helped me carry on.