Things I still need to do about it:

• Apologize for being mean (and reason out that she told me she likes mean guys, and of course, saw it as my chance to show that I can be really mean too...)  But I really did mean what I said. It would have been worth it if she stopped using friends and throwing them away, though I doubt it.  I noticed she stopped hanging out with another person.  
• Saying why I did not accept the apology (since she left again when I wasn't finished)
• Tell her I said happy birthday last year on her BlogSpot but she didn't close it down or whatever so assume that it is okay to do so