Madgran -- "It is perfectly possible to give hard messages without validating something and without being rude or unkind." I'm afraid I have never found this to be my reality. One person's 'rude and unkind' is called telling "the truth" to other people/Me. If someone is 'red flagging' I won't overlook that it's still enabling/validating and IS unhealthy and there is no way to say "the truth" in a way that won't 'hurt' the recipient...
For example, if my 'mom' were to ask Me the reason(s) why I am No Contact, the answer, regardless of how polite or gently worded? It's an attack to be denied and turned into more of HER being the 'victim'... The following is sorta how things seem to 'go' from my POV...
Dear 'mom':
You asked for the reason(s) we are estranged. The answer is, I don't like how you treat Me and I never did. The longer answer is YOU need to self-reflect on how YOU 'behave'..."
Her 'type' of reply -- "That's so vague... What do you mean???"
Me -- "You don't see that how You treat people, in particular ME, is problematic. You need to self-reflect and by 'self-reflect' I MEAN look at what you say/how you say 'things' to Me and then ask yourself how YOU would feel if I said/did those 'things' to You..."
'mom' -- "I still don't 'understand' what I have done wrong!!!"
This is about the time frustration starts to 'set in'...
Me/'child' that is soon to go No Contact (whether they came from a dysfunctional family or not) the reaction is the same -- "Really? You cannot think of one single thing that You have said or done that might have hurt Me? You can't think of a single 'thing' that You should apologize for? And again, YOU don't see 'that' as the dysfunction I am trying to illustrate?"
'mom' -- "Clearly you are irrational and your mental illness is tainting your view of Me... I was a good 'mom'. I always put my children first... You clearly don't know what YOU are talking about..."
Me -- "Yes. I am 'mentally ill' and it's nice you acknowledge 'that'... Did/have You ever asked yourself WHY I am 'mentally ill'? I know You did... And your answer was, "Because Hannah is broken/'wrong' and always has been..." which is a very convenient 'answer' for You..."
'mom' -- "How can YOU think/believe these terrible 'things' about ME!?!?"
Me -- "Because YOU have treated Me in terrible ways!"
So there's the sort of situation I was faced with... Repeatedly.
And often this 'situation' ends in the AC sending a list of 'grievances'/allegations/'proof' to the 'parents' of their past behavior and then We ALL know what the 'standard reaction' is... It's that evil 'letter' full of lies and their child not remembering the situation 'correctly'...
SOOO after all 'that' firsthand/life experience, I think/believe it's far easier to just state -- "You/OP/whoever are raising huge red-flags to ME and here is WHY..." What the person does with my experience/knowledge is up to them...