Thanks so much for all your responses

Mum is in her seventies now. She has been in the mental health system since her mid twenties.In the 1960's/70's she had shock treatment and was in and out hospital. From my perspective this all started when I was about seven after Mum took my brother and I back to her parent's home after my parent's breakup.I remember hearing the words "nervous breakdown" and going to hospitals to see my Mum with my Nana . At home she spent most of her time in her bedroom and wore sunglasses all the time.It was almost like a treat for her to come into the kitchen to have a cup of tea or a meal with Nana and I. We were three by then.My father took my brother and my grandfather had died.But as a young child before all that I remember a lot of 'feelings " I had like being very sad, thoughtful,alone and this may sound strange, but I had this deep sense of being aware that I was alive.Does anyone understand what I mean?
Also years of frightening dreams about flying and houses.
So I left home asap via a marriage and soon after my first child.
Mum's problems continued, suicide attempts ,failed relationships etc.
Lots of stuff that I can share later.But fast forwarding to now.Yes Mum is on medication when she feels like taking it!She likes to be in control of her treatment so picks and chooses what she reveals to her key workers(as they are called here)about her symptoms, like voices, delusions etc. Although I am pretty sure they know she does this.
I think what has really stunned me is the realization that a lot of the things I have believed,(been told by my mother) life stories, things that you accept as"this is what happened" have been untrue,exaggerations and even delusions.Even more amazingly how she has manipulated me to side with her, feel sorry for her,pay for things,ruined the relationship I could have had with my father,believed what she has said other's think of me.Not only me but virtually everyone she has ever known.I am seeing up close how she has operated her whole life, it is scary!
It is as though I am beginning to see through a dark mirror that is getting clearer all the time.
My husband and I live with Mum. Our children are grown and gone, but understand what is going on. My sister,who was born when I was 22,has first hand experience of life full blown with Mum. Then there is my Mum's sister, I have tactfully tried to talk to her about it and how it is impacting our life, sent her stuff to read, she doesn't get it. I actually get why she doesn't get it!