Some people just have different interests. It takes some people a little longer to grow out of their interests that they're so used to. Eventually she will grow out of it, it's part of finding herself. Show her other things she can be interested in. If those are her interests, you can't really change it. Some times people grow apart and go their own separate ways. It doesn't mean that you completely drop her as a friend, it just happens naturally. If you care about the friendship then wait it out and try getting her interested in some of the same things you're interested in.
hope things work out
Support Leader,
Jasmine