How to get my mother to stop drinking?

My mother has been to rehab 3 times already, and every time she comes out she starts drinking again. She tells me that she loves to drink and uses that as an excuse to use. Not only that, she will use any trial or tribulation as an excuse. It has now been 11 years since she started drinking again (she quit with my father for 15 years) and it's been very problematic ever since then. She will get so drunk to where she will black out or until she pes out. It has gotten to the point where we can not bring her to family functions because the embarrment it causes to her and my family. We have done interventions and begged her to stop and get help, which she did but she did not really want to go and only went to shut us up or appease us. She has gained weight, not significantly but you can tell she is a lot more bloated than she used to be. My father can not leave her by herself because he is scared that something might happen to her when he's not around, and my whole family lives in constant fear of her self destructing personality. Every time someone tried to help she takes it as them being judgmental when we just want her to be the person she used to be. My mother is a wonderful person and she deeply cares about the people that she loves, but as time pes I grow more and more weary of the situation. I understand she needs to be the one to want to get help, but if she is not willing to accept that fact than I am scared of what the alternative might be. I love my mother, and seeing her like this or just knowing she's not better kills me on the inside. I just want her to get better, life is to short, and there is no reason why her life needs to end prematurely because of this horrible addiction.