How to explain 'personal comments'?

[SixImpossible]

11yo dd, whom we suspect has undiagnosed Aspergers, is forever making personal comments. We can't keep telling her not to, because then she learns from our response that whatever she says is valueless and wrong. OTOH we can't just not respond, because then she repeats and repeats the comments, often going into greater detail, until we acknowledge and reply.

How can I teach her to apply an internal filter and recognise when a comment is personal and saying it out loud is inappropriate?

Oh god that's familiar!

could you create some cards with example comments, make 3 piles with Good, bad and okay for some people. sections, then sit with her and help her decide where to put each comment. Which are not okay to ask, which are and which are okay to tell people who are family.

"If it's true it must be said"
Ds seems to live by this!
Everything is said in a loud whisper that everyone can hear.
Pirate, that's a good idea, going to try that with ds.