She did good. A statement like that clearly indicates the speaker is beyond repair. Why bother.
That has been a common tactic; why get in an argument if they other person won’t listen.
I say, speak the truth and let it hand in the air like an broken diamond. ( Okay, that’s flowery.) But the truth is beautiful and should be brought out against falsehoods, regardless of effect on dunderheads. The truth has an ability to burrow through.