I had this with my DD. It was intolerable. I felt I was being baited every minute of every day and she seemed to get a kick out of me finally emotionally erupting. I recognise that it was anxiety (explains it, doesn’t excuse it) and/or her discharging her stress from masking all day - as she was ‘perfect’ out of the house to the level of almost selective mute at school. I recognise I handled it badly and didn’t have enough emotional information / capacity / resilience / strategy to manage her.
The standard parenting strategies of ignore the bad / praise the good don’t work here because it’s relentless. I did the ignoring for as long as I could hoping the moment would pass but she would keep going until she got an emotional reaction from me.
I do believe it’s also about trying to get a connection and my approach was wrong.
She is now 24 - went to uni, traveled, lives out and has had one relationship which is now over where she bullied her GF. So I think she’s abusive with those closest to her. Likely from her autism masking but it’s still not excusable or acceptable to impact others this way.
I was recently on holiday with her - having sworn I would never do so after last year when she was hideous - travel and transition escalates her anxiety hence her projecting on to me / lashing out at me.
This time - my approach has been to nip EVERYTHING in the bud - instant / constant / consistent- not letting anything at all slide. It involves having the same phrase with CONSEQUENCE ready to say and enact each and every time. No getting drawn into any specifics / details of her insults or complaints:
”Enough. Stop. Your words / tone / behaviour is hurting me.
This isn’t acceptable - if it happens one more time I am disengaging for the rest of the day / you are not coming for dinner / I will get up and leave this coffee shop right now.”
Above is what I say CALMLY and then follow through on.
In non agitated moments I explain that this is her anxiety ‘acting out’ - escalating internal feelings becoming reactive and negative external behaviours and she needs to learn to interrupt this automatic pattern to process those feelings internally.
I can only do this because we now don’t live together and I have the opportunity to restore my emotional capacity. I also think I let her down by being too passive with her when she was younger - I needed to be more calm, considered and assertive - but I needed support eg time apart, better skills etc that I didn’t have.
Best of luck to you. It’s hideous.