Where does the time go?

I am in utter amazement that the little girl I never dreamed to know past 6 years old has just turned 17 and is now preparing for an early graduation and college. Where did the time go?
In her early developmental stages, she was diagnosed with what was called a Social Developmental Delay. This I later learned is a clinical term for inability to make friends.
I was so hurt thinking that my baby would not be able to play and interact with the kids in her head start class. Sadly enough, this has carried over into her adolescent life. She's always had a rough time making and keeping friends. She's as sweet as she can be but lacks the confidence needed to thrive in that area. Thank God she has always had a vivid imagination and is able to entertain herself. I guess it didn't hurt that I gave her four more siblings to grow up around. They don't get along all the time, but they are always there for each other.
I'm hoping college will prove monumental for her and that she is able to build new, positive relationships that are long-lasting.