Lol, why? Were you going to recommend her for counseling or something?
Haha, no. I just don't have very much expertise dealing with this subject, and IMO, the best strategies for depression differ with age. If she is in high school or college, then her experiences are similar to mine, but if she's past schooling, then I think the cause for her depression is rather different, and more serious.
In fact, a part of this has to do with getting INTO college.
maybe help her out in practice. if she feels like she'd be unable achieve an acceptable grade on the SATs, or keep up in a certain class, or write an admissions essay, perhaps you could help map out practical steps that would help her get there. for example, develop plans of study or outline some topics. just something to instill a sense of confidence and hope.
perhaps, she just needs to be reminded of why she should go to college. i know i was pretty severely unhappy for a while until i started to cultivate a almost spiritual (but not exactly religious) calling as to why i should continue with life.
sorry, these are pretty vague since i don't know the details of why she feels so low.
"Why had he never appreciated what a miracle he was, brain and nerve and bounding heart?"
motivation and remembering goals really help. So does lots of affection and interest in them. Keep up and check often since were not sure about our own ideas, thinking we always can do better than what were doing. Give a channel for those ideas, like writing them down or talking about them, so that they stay ideas and don't become actions of feeling until we have a clear picture about what the idea is about so we can make a clear decision. I should take my own advice.