Feeling that way is normal, but you would be selfish if you let that affect your friendship.
Yes. You should encourage her to live out her dreams. True friendships are not broken by distance. Or time.
Chase dreams of your own. Those that are yours. If you were meant to be friends for life, you will be. My wife and I had a a friend couple who we lost contact with for 12 years-it happens- then we got together-now with grown kids, and it was like we never missed a beat. What was best about it is, our kids hit it off instantly. It was incredible.
selfish in a good way.