Thank you for replies, I didn't get a chance to read them last night, but they've made me feel a bit better this morning. Thank you.
I decided to talk to her last night, and she went off the deep end very quickly, was very cross that she thought I was 'taking Dad's side', and refused to believe that I have/had any genuine concerns about her health, which is when I decided to tell her, by way of proof of my concern, that I had infact called her GP to tell him I was worried about her. She was furious, and at 9:30pm decided to get her boots on and go home (a 3 hour journey on public transport!), I persuaded her to stay the night, and after I sat and listened to her rant and ramble for over an hour she agreed to stay. I swear I didn't say a word for an hour.
She has told me that she is determined that (long story short) she will be keeping the house, and sounds like she is going to be extremely difficult with regards to divorce proceedings. Of course she won't be able to keep the house, but will be able to dig her heels in for a couple of years.
Anyway, after a night from hell, she managed to leave without me seeing her.
She really is losing the plot, and I do worry what she will do next, it's crossed my mind that she will try to contact my GP to teach me a lesson. (Not that that will be a huge problem I don't suppose, as I have no health problems, mental or otherwise, and a good relationship with GP, but it would be unpleasant and upsetting!)
Attilla, when I spoke to her GP, I didn't mention the possibility of dementia, and he has since had conversation with my Dad where he sad that he thought it would be a good idea to get Mum's thyroid checked. She has always been like this, i.e. angry, but she is becoming less 'decent' somehow, and increasingly abusive. I wonder whether dementia is a thought, it hadn't really crossed my mind. Thanks.
gagarin, good pioint when you say "If it were all down to her thyroid then she would be smashing glasses over everyone's head - not just your dad..."
NQC, I wish so much that she would consider therapy, but there is no way, she thinks she is an expert as she used to be a hypnotherapist (for about 2 years) so had to study quite a bit of psychology, and she is obsessed by the idea that Dad needs therapy. She is the only person in the world who is right, and EVERYBODY else is wrong.
The way I feel this morning, I just feel like writing her out of my life for a while.