>>3 I could say the same about boys. But, I think the problem is more human beings than anything else.
I think
>>2 got it right on. Remember that she's a human like you. If you're feeling really bad, and you feel like you're a piece of shit, it makes a difference when someone just cares about you. Knowing someone is thinking about you is very uplifting. It gets more and more impacting as time goes on too. You could say knowing someone cares about you is the reason people fall in love. I would say it's probably one of the most important things in life.
So, in summary, letting her know you care about her is more important than you think. Even a simple gesture that doesn't seem to mean much on its own could be really helpful. What do you have to lose? Show her that Dollars spirit! :-D