That stuff happens on all social media sites ! It happens on this and other sites that people make multiple accounts. Silly and a waste of time and trouble to me. I would just ignore it and act like that person doesn't even exist. That bugs them the most. It's just another website.
What is her problem? I blocked this girl off all her Facebook profiles and recently she made a new one to spy on mine. She has at least 6 by now she can't even see anything my account is private.
Again, FB just giving people a forum to create a lot of unnecessary drama. It's just like being in high school ... All the time. Such a waste of energy.