MCR Obsessed Friend?

My friend is obsessed with My Chemical Romance, and it's become a problem to the point where my friend and I feel she doesn't need us anymore!! I have no objection to her loving a band, but loving five guys she's only seen in concert once and never talked to, and then not needing her friends? I mean, she never talks to us, when she seldom does it's about that band, she's not as close to us as she used to be. She constantly rattles on about stupid facts at lunch, like "Gerard's favorite flavor of jelly is g" or whatever, but doesn't know that our favorites are blackberry and strawberry. I feel really distant from her now. After cl is done, we sit right by each other, but she doesn't even talk to us, only doodles MCR lyrics on her folder. It's really frustrating my friends and myself. What's worse, is that she has no other 'friends'. It's like she needs nothing more in this world than those guys, and she could care less about other humans{including us}! What should I do?