Basically, my problem was attributed to stress more than anything. I don't know what that does and I guess doctors can tell you that there's chemicals that build up in your system when you go through a lot of stress and constant stress.
I could probably have made the head shot from the railing, but with an unfamiliar gun, it was too risky. I didn't want to accidentally shoot the woman in the head. Killing the hostage is always frowned upon.