Ms. Heartbreaker

Meet Arabella Winchester, 17 year old, average height, blue eyed, brown haired, senior at Parkerville High School. Just a normal girl trying to make it through high school.
Now meet 'Ms. Heartbreaker'- Average height, black hair, striking green eyes and Parkerville High School's heartbreaking specialist. She is 'requested' through email to break up couples, this request is of course sent by the person itching to get out of the relationship. But she isn't seen by the students other then when doing the request, all though the legend that accompanies her appearances picture her as a fierce female that is the complete package and people should fear her showing up around them. Nothing good comes with her.
Total opposites right?
But what people don't realize is, these two girls, are the same person.
It started in freshmen year, and has gone this far.
Will Arabella end the whole Ms. Heartbreaker scheme before its too late? Or will she let it go on and hurt more people then it has already?