My oldest DD turns 14 tomorrow and I find myself sad about it. I realize that my sorrow has nothing at all to do with her...she is a lovely, wonderful, talented girl. It's about me, but I haven't figured out what it is that is the issue.
I don't think I'm sad about her growing up....the older my girls get, the better I like them! 
She is having a great time in marching band and I'm sure she will not have scholastic issues in high school either.
She has a close group of friends: they are good friends as well as being good friends.
It's not a big change, here, from middle school to high school, either: same group of kids, same schedule, same bus...
I'm excited for her: thrilled with the woman she is becoming, pleased with her environment, proud of the activities she choses and the friends she has....
What is the problem???
Must be me!