If I'm reading that correctly, it looks like a 120GB drive
58.5gb on C
1.77gb on D
50gb on the Recovery E
I don't know if changing the size of the Recovery will screw it up. And the D is too small to worry about.
Your best bet is a new drive. 1tb or so. Or delete/uninstall some stuff.
Clone the current drive over to the new one.