My alcoholic mother.?

My mother has been an alcoholic for the past 8 years. In the past 6 months, it has gotten to the point where she cannot even go through the morning without a drink.
She recently did a detox and managed to not drink for several weeks, but during the holiday season she has fell off the wagon and is straight back on to drinking large bottles of vodka. She does this whenever she can.
She tells me about the bottles and blackmails and bribes me into not telling everybody else, but i don't want to watch her die :/
I don't know what to do anymore, shes such a vile drunk. She's incredibly mean and some of the things she can say really hurt.

I don't want to lose my mum, but I don't want to suffer this anymore. It's not fair on my younger brothers (14 & 10) nor me (17).

She regularly blames her alcohol consumption on the people around her (including us) by claiming we make her life hell etc. Yet she brings negative people into her life, such as her emotionally abusive boyfriend.

I just can't cope anymore.

: http://alcoholdrugstreatment.info/my-alcoholic-mother