I'm 27, yet I found resonance with this piece titled,
Having a Smooth “Breakup” with Your College-Bound Teen " I saw featured on the homepage of Psych Central. It describes my mother and I, it's like it's an ongoing, never ending battle/struggle.
http://psychcentral.com/lib/2010/having-a-smooth-breakup-with-your-college-bound-teen/ Take a read if you will. I don't think it's always possible. My siblings claim it's just how mom is, she encroaches too much on their lives as well, yet for me it's always more. Something about being the baby and the only girl. Anyways, take care for now. =)