I'm 20 and my mum Joanne is 49, she got diagnosed with breast cancer a year and half ago, which was the same time I went to university. This meant that my mum had only my younger sister to try and help her. Mum developed neutropenia sepsis which meant she had to stop chemo after 3 rounds and the sepsis has left her with some health complaints (mainly cysts around her body and low white blood cells).
Shortly after I left, my younger sister was sexually assaulted and then fell into the "wrong crowd" at school. This lead her to starting smoking and having underage sex etc. My mum went through a mental break Christmas 2014 where she ran away and tried to commit suicide, though this is speculated to have been caused by tamoxifen (her cancer drug). Things seemed to improve after that but by summer 2015, she began to become violent again. This was increased by the fact that my sister chose to run away to live with a family that the police called "dangerous and a risk" she lived there till November. My mum was a heavy drinker before cancer and has continued to drink after she was allowed. She also speaks to two friends who are much older and seem content on blaming everyone but her for the problems. My father (divorced) has been no help with all of this and makes things worse by blaming my mum and myself for all of the problems with my sister and taking no responsibility himself.
I don't know what to do, I have become the main communicator between my parents, meaning that I get the abuse from it all. This takes up a lot of my time and has affected my uni studies. My mum is out of control and will not listen to reason. The friends that she speaks to have made her go to a solicitor who makes matters worse by telling her that it is not her fault. Her current attitude is "I will consult my solicitor" or just threatening people with "legal action" this is normally aimed at me, and I am the one trying to help her. Someone needs to tell her that she is mentally ill, and so advise her to get help. But I am the only one who is admitting that there is a problem! I can't cope with this, it's too much for me to handle. Currently I have returned home for my Easter break and was visiting family for the day, I came home to my mum shouting abuse at my sister and then she got violent with me, I tried to speak to her but she would not listen. I am now too scared to leave her alone so I am sleeping downstairs as she has passed out on the sofa, I am scared that she will commit suicide as she has attempted in the past.
Is there anything I can do, I called the police numerous times but she changes persona when they arrive and becomes "the victim" and I am the one who is the danger. I have asked for them to help by getting her assessed. They refused. Do I have the right to go to her doctor and ask for help? Or is this not allowed due to patient confidentiality? I just want to be able to go back to uni and not have to worry that every call I get will be about her doing something or her attempting suicide. I love my mum so much and this just makes it worse.
I know chances are slim but any response would be greatly appreciated. Xxx