I think buddy here needs some anger management pills. I've only heard of a million situations gone wrong when they start off like this.

One of my best friends had a situation like this. Her mom's boyfriend threw things, broke things, yelled, stuff like that. But now, it's more severe. He's grabbed my friend's hair and thrown her against the wall. He's punched her mom. My friend sleeps with knives under her pillow, and underneath everything in her room. He's on pills now, so that she has no reason to be distresses, but the pills don't seem to help.

You don't want to live like that. So I'll tell her what I told you. As soon, as you can, get out. Even though you're old enought to leave now, it's not the best decision. I'd wait until you're 18, then get the Hell out of there. Violence that starts like that, only gets worse as the years go by. You don't want to end up like a lot of my friends, who are depressed, on pills, are taking counselling, slitting their wrists, because of things like this.

I can already hear people saying "talk to your mother" but me being a teen myself, I know that's not an easy thing to do. But maybe you should tell her something of what you feel, not in anger, but in sadness.