I have been a HUGE Beatles fan for thirty five years! Since about the age your daughter is now. Check out the website-
www.thefestforbeatlesfans.com. I'm not good with computer things so I don't how to put the website here so you can click on it.
That site should have just about anything you're looking for. There are tons of Beatles related sites on the web, many dealing with original items from the sixties.
The site I mentioned also has information on Beatlesfests that take place in the US at various times throughout the year. I've attended the one in New Jersey a few times. It's a fun place to go and be with other Beatles fans and to buy Beatles items.
It's nice to hear that teens today are interested in the Beatles. My two daughters went through phases of Beatles worship, also! My oldest, 20, still loves the Beatles, but my youngest, 14, has kind of gotten away from them. But I've noticed that some of her friends are now discovering their music!
Anyway, sorry so long, but I hope that site helps you!
edited- I guess you can click on the site!