What does it mean when a girl deletes her Facebook account?

This girl and I been talking a lot over Facebook. She lives so far away, but i still ador her... Just recently she posted an update. "You be the moon I'll be the earth and when we burst. Start over. Begin again" lyrics from a song. then deletes her Facebook without saying anything to me.

Im kind of hanging and broken hearted. :( even though there was probably no chance because of the distance
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Is there a way i can tell if she blocked me or deactivated?
What does it mean when a girl deletes her Facebook account?
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