Repercussion Cover Reveal: Who is That?

Yesterday, I decided to go ahead and make Repercussion available for pre-order. I hadn't intended to do it for another two weeks, but I thought this would be a good incentive to stick to my deadline.
Most of my beta readers' initial reaction to seeing the cover design were along the lines of "cool" or "creepy." One of them asked another question--"Who is it?"
Here's the pic:

Pre-order Repercussion here.

I don't like to tell other people how to interpret art, and in this case, I believe the photo is certainly art (whether the book is or not remains to be seen, though I hope that it is!), so you can interpret for yourself who the lady on the cover is.  However, here are some options I've come up with:

1) It's Holland.  The name of the book is Repercussion. It centers around the effects of everything that happened in Transformation and Resurrection.  The series starts off with an altercation between Cadence and Holland, so, even though Holland doesn't appear directly in this book, the events that transpire are certainly influenced by her.

2) It's Sobi.  In the opening scene of Repercussion, Cadence, Meaghan, and Aurora are fighting another ancient Vampire queen by the name of Sobi. She is described as being eloquent and beautiful--much like the lady in the picture. If you'd like your cover to be more directly tied to the book, perhaps this is Sobi.

3) It's Laura. Is Laura a Vampire? No.  Is Laura evil? Absolutely--maybe this monstrosity of a beauty is the renegade Vampire Hunter Laura, glaring at the world from her contorted perspective.

4) It's Cadence. Huh? I know--it's a stretch. But there are no obvious fangs on this girl. Maybe this is how our heroine is feeling on the inside by the time she gets to this point in the series--like she's bleeding internally.  After all, she's already lost Drew and Jack--and the hemorrhaging isn't over. Cadence will lose at least one loved one in Repercussion.

5) It's a representation of all Vampires. Maybe this isn't a specific character. Maybe she just represents all of the nemeses Cadence and her team have to face.  Of course, not all of the villains in this particular book are Vampires....

So who is it? You tell me! I'd love to hear your thoughts.  

Also, for my loyal fans, I am offering Repercussion for pre-order at the low price of 99 cents. If you order before September 1st, not only will you be among the first to read the third installment, you will get it at 66% off. You can pre-order here. And please let me know what you think of the cover. :)