I am not sure if you can help me or if you know enough of the laws for the province of Alberta in Canada?

I just have some questions regarding my own situation.
I will be 17 next month and am wanting to become an emancipated minor.

I left home at 12 years old, due to the emotional,verbal and physical abuse perpetrated on my person by my mother and her then boyfriends.

(Ex:at age 7 was forced to consume large amounts of alcohol as a form of punishment and as a result by the age of ten I was a full blown alcoholic along with suffering from severe depression and I literally had stopped talking.)

I lived on the streets of Montreal for over 2 years.

I found my way out west to Alberta and have been here since I was 15.

I have been clean and sober since Feb of 04 and living in a home for recovering addicted teens. I have had no contact with my mother since I left my own home.

However, she has found me and is trying to have me relocated to Montreal where I was raised. I refuse to leave Alberta. My guardian is in the process of trying to find out my legal rights.

I will never go back into her care. She caused me so much pain and suffering that for me to return to that "home" would only set me back years I am sure. Plus I am graduating this year and I have already enrolled in a college program for next fall. I have followed my program and even though I did relapse once, (right in the beginning of my recovery process) it is not something I want to happen again.
My fear is if I am placed back into that environment I will relapse and that scares me more than anything.

As well, it has been brought to my attention that my mother has spent the last two years in prison for physical assault on another young girl..supposedly her girlfriend.

Do you have any advice that may help me in my endeavors to become an emancipated minor??