Do you think the Twilight obsession is something to worry about?

I've got a few friends who are fourteen, some of them like twilight and think that Jacob's hot etc. But one of my friends...she's my best friend and i'm worried about her, she always talks about Twilight, compares everyone to a Twilight character and every situation from one off twilight, she also wants to move to Forks and she made up a fake boyfriend who is exactly like Edward Cullen. She's a smart girl and we share the same view on a lot of different things, but I don't want her to become another brainless twihard. How do you know when the obsession goes too far and should I be worried?