Alcoholic mother - unsure what to do anymore

I’ll try and keep it short but I’m 20 years old, have been trying to deal with my alcoholic mum since I was about 9. She recently had an affair so my dad had to get a divorce, he’s always tried to help her with alcohol but she’s always refused help. So I’m currently living with her as I have no where else to go - since my dad is temporarily staying with my sister in her tiny house.  It’s been about a year since my dad left , and my mum is out of control, she’s lost multiple jobs. She stays in bed all day drinking vodka, as soon as she wakes up , she drinks again and I can’t get her to see sense.   I feel like I’m trying to figure out what I want to do in life since I’m so lost and at the same time I am dealing with this and I get so angry at her because I feel like I’m losing the best years of my life. I also have to take care of her dog since she’s asleep most of the time , and I’m finding it difficult as I work full time and doing exams and trying to walk her and stay in all weekend so the dog isn’t all alone. I just wondered if anyone had any advice on how to deal with an alcoholic when you’re on your own. 

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