Shawtee,
Welcome to the depression forum. It sounds like you are trying to figure out who you are and that takes time. Just be you. Counseling is the way to go, you would not be betraying your parents if you went. Everything is confidential, and stays behind four walls. It is up to you to do something about this, and through this you will find your self. You owe this to yourself.
I think at your age, this is normal. Trying to figure out who you are, but a lot of that comes in time, as you get older you mold into the person that you want to be. And the person that you want to be is the person that you are. Regardless of what you feel.
I hope that you get some answers, coming here is a good thing. You will get feedback and support. So keep posting, and know that we are here to support you.
What your father did by throwing you through a plate glass window was not right, regardless that he has changed. You might want to explore that with a counselor and get your feelings out. I am not saying to not forgive him. Forgiveness is good, but you need to access the situation and the feelings that you had at that time and realize that you deserved to have those feelings. But after that, you leave the past in the past. But you need to work through it first.
I hope that your mom has changed. I hope that she is there for your family now and that she isn't doing what she was doing before. It sounds like you have a really troubled past and need to come to grips with it. Regardless, be you. No body else. Go to counseling, discover yourself. Learn to love yourself. You are a good person.
Hugs, Karen