Dude, the fuck.
I'm sorry, but if she was such a good friend to you, how come you can't just let it go? You know, you can't expect so much out of people...they have their own problems, too. You guys seriously need to stop blowing this up.
It isn't identify theft. It's not like you've never lied. She didn't tell you to fuck off or anything. In my eyes, she's got nothing to be sorry for. A lot of you guys seem very depressed, but you go out into the real world anyway...you're telling me you've never lied about being happy?
Remember that if you're supposedly friends, you really shouldn't give a shit. Just be happy you can relate to someone in more ways than you thought of before. She's not a bad person. Jesus, you guys are acting like she robbed you.