Elizabeth Fish is Camryn's best friend.
Nothing much about her, except, that she is a bit' dizzy, but nice. Beth is the first person to come to consciousness, the existence of Alex.
Beth is the typical rich girl, who is famous only because a friend of an equally rich girl but more famous for her. Although the appearance is a bit frivolous, it seems to be a fairly nice girl. They met at the kindergarten, and have remained friendly since then, probably due to their social status.
Beth makes a brief appearance even in the sequel of Twitches, in fact, appears for the last time in the movie, only at the beginning.