Trevor - Agony Aunt

Dear Agony Aunt,

I am an 11-year-old boy who live with my mother and I have a big problem. I hope you can help me and give me a piece of advice.
My mom is an alcoholic and but she lias to me about it. She is always drunk or have hang-over.
She is unpredictable and sometimes she is just gone for a few days...
She has a responsibility to me, but its like she never is there when I need her.
She is anxious that my dad will come back and beat her up again...

Thank you in advance,

Trevor