Look for local Al-Anon group and also Adult Children of Alcoholics, definitely go there fir help and support. Make plans to move out asap. Contact council, Women's Aid, and so on. (Women's Aid are not just for battered wives. You're actually suffering from verbal and emotional abuse from your mum and they can help with this, they even have counselling, it will help you to see it's not your fault and not acceptable.) Look for a room in a shared house perhaps? Definitely take the necessary steps to leave.
Read up on codependency.... the other side of growing up in a house with an addict. Get whatever therapeutic and mental health help you can for yourself because, through no fault of your own, you've grown up in an abusive and codependent environment.
It may help you to know that, while staying and being a loving daughter trying to support and get help for your mum may seem like the kindest thing to do for your mum.... it's not. Unfortunately it actually enables the addict to continue with their destructive behaviour. So, leaving and putting in boundaries can be a form of tough love. You WILL need help with all of this. There is no way that you could currently know what a healthy boundary is for you because your mum while in her addiction has eroded al your boundaries.
You CAN still love and have empathy for your mum, while clipping the unhealthy ties that bind and getting out of the situation of taking the abuse.
I recommend a book called "The Verbally Abusive Relationship " to help u understand that it IS really abuse and is damaging.
Every effort that you put in to getting YOURSELF therapy, counselling, support, is going to benefit not just you but people in your life in the future who you have relationships with. It's going to help your self-esteem and help you not get into another codependent relationship with a partner... it's going to help your future relationship with your kids if you decide to have any and it's going to help your relationship with your mum, eventually, I hope. And it's going to help your relationship with yourself.
Don't underestimate what you've been going through. Be so kind and gentle to yourself. Avoid self medicating your emotions with anything whether it be alcohol, food, drugs or whatever- therapy therapy therapy. If you don't like a therapist... get a new one. It can take a wjike to get a good fit but for now any free help you can get. Contact gp too and ask for whatever help nhs can give to your mum or you eg community addiction or mental health team etc
Even a good local church can be a good support, you would be surprised, some churches do a lot of work re addiction, foodbanks, etc
You definitely need out of there. It's heartbreaking for you to see your poor mum suffer from addiction and to feel her pain and vitriol turn on you. THIS IS WHAT ALCOHOLICS DO. If she ever does get into proper rehabilitation/therapy and is off it and faces up to it... she will then know what shehas done to you is wrong
This is a 'plane going down' situation. You need to get the oxygen mask and life jacket on now and save yourself and if you focus on that you may be able to help your mum in the future but in a different, non-enabling way. Even you leaving will help (even if she doesn't reach out for help and sinks further...while you're there she's just gonna blame abd abuse you)
Also don't underestimate this, in my opinion it seems to be much worse on you when your mum is the alcoholic (rather than the dad). That depends of course as we all know a violent alcoholic dad would be hugely terrifying and dangerous. But there is something SO damaging in growing up with your mother who gave birth to you choosing alcohol over you. Remember it is addiction and at the moment your mum is not consciously choosing this. And her wrongly blaming you is one of the things keeping her stuck.
Please please use all the answers on this thread and give yourself permission to seek ALL the help you can. You need it and deserve it. You will likely have periods of feeling worthless ...this is NOT true and is a result of the abuse and co dependency and dysfunctionality in your household... and depressed, and it will be hard when you leave for a little while so get counselling and therapy in place now
Do you know what as well? We ALL could have done with a therapist through our 20s! (I'm speaking for myself anyway). I grew up in an addiction and codependency filled house too. You can do this but don't isolate and fight the impulse to. One step at a time build your support network. Good luck, we are all urging you on ! I can feel your love for your mother in your words. Underneath her addiction she loves you too but when she is in the addiction you are dealing with a monster trying to attack and destroy you. You need to get help to get away now. You can do it