Can people track down my facebook?

[Sam]

If you lie about everything , NO. But, when i made my account, it asked for an email. So, if it still does and u supply your email and you don't know how to hide your email from others on facebook, they may find out that way. So, you better create new email too.
Better idea would be to ask your friend to leave the group. Otherwise, its pretty difficult for you too. Coz, even if you make a fake account, and the group admin don't recognize you, it is possible that they won't let you into the group at all if the group is closed, and if you add the people you know, it won't be anonymous. Anyway, these are only practical problems i wanted to give you a heads up about. But, if you decide to really do that, it shouldn't be a problem if they don't recognize you by email.
Also, you can complain about bulleys to facebook you know. good luck!