Backstory:
My best friend and I met at college at 16; we are both now 29 and still very good friends. She has asked for advice r.e. her mum, I don't know what services can do, so suggested I asked Mumsnet, ( she knows I'm a regular Mumsnetter). She has asked me to show her the thread if it comes up with useful advice etc.
She grew up in a religious family. Her parents attended a C of E church. Whilst my general perception of the C of E is it is generally mainstream, her parents subscribed to a very literal/ extreme version of the religion, ( that anyone who didn't believe would burn in hell forever). Consequently , my friend's mum in particular was terrified of my friend losing her faith, would regularly warn her of the consequences, ( burning in hell), for people who died without faith, and banned my friend from under 18's nights in case "she met and fell in love with a non Christian and they took her away from God/ Heaven). My friend wanted to study philosophy at Uni, but her mum forbade this, ( she thought studying philosophy would turn my friend against religion), and went as far as banning/ binning mainstream philosophy books my friend brought. She would regularly cry and become extremely upset during my friend's childhood at the thought of elderly family member's who had died without religion, and what awaited them, ( hell etc).
Despite the religious upbringing, my friend is agnostic. She was therefore very pleased when a few years ago, her Mum decided she had misinterpreted religion. Her mum essentially now believes that God loves everyone, there are many paths to God and there is salvation for all. She is no longer worried about the fate of elderly family members, ( she now believes God saves all), and initially seemed a lot happier.
Around this time she also became vegan, she began evangelising about the vegan diet in the way she used to about religion, but my friend didn't really mind. But then the patterns got similar, she got really, really , really into veganism and this began manifesting itself, in her telling everyone that diet alone, would cure 99% of illnesses, and modern medicine, ( think vaccines, chemotherapy, antibiotics, antidepressants etc), were all a big con by big pharma/ the NHS/ doctors who were trying but didn't properly understand the science etc, ( she has no medical qualifications).
Then covid happened, which coincided with her retiring from work. She now dedicated all her time, to forums/ online groups which shared her views. They convinced her that covid was essentially a "scam," from the government/ big pharma, a plot to vaccinate us all to control us, and, according to my friend, she spends about 10 hours a day discussing these views/ the truth on various online forums/ platforms.
Despite having several health problems that put her in the high risk catergory, she has refused the vaccine herself. My friend has had to get vaccinated in secret, as her mum has told her she would " not even bear to be able to look at her,"" if she got "that poison," injected into her. She truly, truly has fed into the belief, ( helped by her new online friends), that covid is essentially a scam to trick us into getting a poisonous vaccine, and the government have been manipulating death figures, ( she is sticking posters/ leaflets with words to this affect round our local town).
She is now telling my friend, ( and anyone else that will listen), that she never intends to visit the doctor again, because her internet research has convinced her modern medicine is evil and diet alone will cure all. She is very vocally critical of her sister for "stupidly falling into the evil trap of big pharma/ untrained doctors," and taking arthritis medication prescribed by her GP.
She is also begging my friend not to attend any further standard smear tests, as her online research shows this is a "trick," of doctor'/ the NHS/ big pharma to push people into having unecessary cancer treatment.
She's repeatedly now saying that even if she gets cancer in the future, she won't be attending the doctor's or having any surgery/ chemotherapy/ radiotherapy treatment at all.
My friend is now really worried, if her mum develops cancer/ serious illness in the future, will she really be allowed to refuse all treatment ?
Sexondly, can mental health services do anything to help. The woman doesn't appear to be psychotic, ( she's not hearing/ seeing things), but is basing all her new beliefs on her online "research," which , now she is retired, she can dedicate 10-12 hours a day to. Is there enough here for mental health services to get involved ?
My friend doesn't live with her, but does live locally. Her mum lives with her husband, ( my friend's dad), who will essentially busy himself with work, ( he is still working full time), and more or less go along whatever she says for a quiet life.