Author's Note
I know there has been some confusion about the title, if fact, some people have even told me that it makes them have to go to the bathroom. (I found those very funny!)
So, I am going to explain now what the hell the title means!
Okay, When Nature Calls refers to HUMAN nature, not bladder functions. It refers to what Edward is going threw in the sense that A.) his human nature is taking over and making him, um, how do I say this, not as on top of things. All he can think of is what life would be like if he were human again. B.) that he can get his humanness back. He won't have to be a vampire any more. (Though if that were to happen, I'd probably cry on my pillow for days and eventually die because I forgot to eat while I was mourning the loss of Edward's vamp-ness.) C.) When he's in the unconscious state that William's touch causes, (I'm not sure if I'm going to write this in there or not, so know that it happens, even if I don't say so.) his human self calls to him, trying to turn him back into a human and not a vampire. That's how William's gift works. It causes the live self to call to the dead self, or vise versa.
Thank you for listening to my rambling self and I hope that some things have been cleared up!
Lindsay