Numb. Nothing. Blank. So What Do You Do?

What do you do when that one person who you thought would never crumble finally collapses?
Firstly, don't think I'm complaining because that is the farthest thing from my mind. Anyway, you BE there. That is what you do. And I couldn't. God, I hated hearing her cry. It broke me. And it was even worse that I couldn't really be there. I was there as much as I could be. I let her break. I calmed her (I hope). But then, I got tired, which ruined everything. I was borderline falling asleep about six times and my words had begun to slur. I really wanted to be there, to listen, to help her through it, even though she didn't want to talk. Damn, I hate the human need for sleep.
So, anyway. I was kind of...numb today. Just because I can't do anything for her. I was very mechanical. Nothing I did had any emotion, save worrying about her. My speech which is normally nervous sounding (even during practice for Fridays in a class of three) sounded like nothing. Monotonous. I'm scared for her. I don't know what I can do.

My brain called; it said to stop sending it information. It's overloaded.