SS.....check yourself in friend. Your mother may be in denial but you need some serious help and if you have been the therapy route before and it hasn't helped you get to the place you want to be then you must take action. Your mom won't be living with the negative consequences of alcoholism - you are and will continue to.
You know what you need to do. I hope you do it before something happens that can't be taken back.
I don't think I can say it any clearer then saying this - screw what she says on this one. She is being ridiculous but you have the control here. Make that call.