Why is that my aunt was more of a mother than my real mom was? Should I forget my mom?

I'm the only female in the house since mom left. It's been like that since I was 8. It's like males took over. I can't wait to leave for college. I love them but I can't live in a house of men anymore. My dad said, "Go hang out with our aunt or friends if you wanna be with the ladies." When my aunt comes over, she always wants to take me somewhere so I won't be in the house with men all the time. She has been getting me to spend the night. It isn't the same as having a mother. Since my mom left, she stepped in to help us especially me since I'm a girl and I was going through changes and still am. She was there for me when I had my first period, boy problems and all. Well most things. My best friend was the first to know about my period. She helped but not enough to make know since she started four months before I did. She even offered me to talk to my mom. My aunt was upset that I didn't tell her since I told dad after I was too embarrassed too. My aunt said she could have helped which she ended up doing. Don't get me wrong I appreciated everything she did for me but she isn't my mom.
My mom isn't even interested have a relationship with us. I wish I had the mother and daughter bonding I see others girls have. They're lucky. My dad said my aunt has been more of a mom than my real mom so tell her happy mother's day. I sent mothers day gifts to mom too but I never got a thank you from her. I keep running for my mom and my dad says I need to move on and forget my mom and it isn't working running after when she doesn't give a damn. I want my mom!