I think i lost my best friend, and i cant live without her :(?

I have a lot of friends, but shes the only one i hang out with outside of school, and my best friend. Well, I recently made a decision to move schoools and she sent me a long email talking about how they have cliques already, and how shes my real freind so shes going to be honest and tell me il probably be a loser "which im not at all in my schoool right now".. and she was talking about how we probably cant be freinds stil even though i have time to hang out on the weekends because it will jsut be different and we will grow apart. she was talking about how she used to have a friend who moved schools and then they lost touch, and how thats probably going to happen with me too. and all i can think about right now is how i cant live without her. i love her soooo much "as a friend" and im debating now on whether or not i should move schools. I kind of just want to move becuase ill be able to ride my horse more now, help my dad with his business, and just be able to start over. I dont konw if i should not move just because of her. What if shes right? what if i really am a loser? ill only be gong to my new school for 9 weeks, but without her, and friends at the new school im going to be lost.