Long distance advice

I've been talking to a girl on the other coast and we're really in to each other. We're planning on going to the same college or at least nearby. I love her but she is a handful for sure. She is a bit immature relationship wise and I hope it won't last long, if she doesn't expand her mentality in the next year or two I don't see us being together very long. She's more living in the moment and I'm trying to plan for the future, which she hasn't really put much thought into. At the moment I know for sure she loves me and I'm not being played but I can't help but feel like one day she's going to change her mind. I just want some input from other people. Am I being a fool hoping she'll grow up? Do you think she'll lose interest? However this plays out, I'm glad we had this time together and it won't end in hostility if it even does end.