I hope it's ok to post here - I'm not sure what board to use.
TLDR: how do you challenge the outdated opinion of parents are always right just because they're your parents?
I am going through a period of change through therapy and self help to heal a lifetime of unhealthy behaviour around people pleasing, anxiety and negativity largely as a result of undiagnosed ADHD (until my late 20s). Part of this process is learning how to deal with conflict within my family. I am now no contact with my identical twin after a painful lifetime of manipulation and very damaging behaviour on her part. Within my family I have recognised that I am never validated, always the scapegoat, and that noone is EVER wrong. Essentially, the only acceptable view I can have is that my parents are perfect. They are incredibly defensive and they can't see that they can hurt me even if they didn't intend to.
Despite being nearly 40, my mum expects me to just automatically listen to her, never challenge her hurtful behaviour, and essentially take her view because she is older. She regularly uses phrases like "I was raised to be quiet and that daughters should respect their mothers". This is usually in response to me calling her out on rude, hurtful or disrespectful behaviour towards me. She was brought up in quite a strict household, silence at the dinner table, boarding school, very authoritative military father etc. I was not brought up this way.
I absolutely cannot stand this phrase. I think it is incredibly outdated and essentially a way to shut me down. I haven't been able to challenge it yet. I am terrified to bring anything up, even though I use the right approach (learnt through therapy etc). my mum will always turn it around to being the victim (e.g. "Ohhh that's it, I'm a terrible mother, it's all my fault, I try so hard but it's never good enough etc). Ironically my mum has a long history of poor mental health yet won't accept that this may affect others.
Has anyone got any tips on how to challenge this phrase and behaviour? I go in calmly but usually end up in tears despite trying so hard.