I'm so sorry. I know how you feel though and it sucks. My mom wasn't there for me either. She was there as in living in the house, but totally not there for either my sister or me. It's a long and ugly story, I won't go into details, but feel free to PM me anytime. Like you my dad was always there for me.

I agree with Karen about finding an older woman as a mentor, maybe a friends mom or a teacher. I didn't find a mentor until I was 18. About 2 weeks after I graduated I got a job at a pet boarding facility (I'm still there, 5 years later). There was an instant bond between my boss and me. She became my mentor and a mother figure in my life.