I am not worried about the response from her in that phrase being a non sequitur.
Certainly it could be either one or two. But if two - then I would expect her to have other ways of explaining to stupid people. If one - I have tried in different ways to convey what I am wanting her to understand. Understand does not mean agree with - but because of the lack of understanding - we cannot get to the part where there is agreement or disagreement.

And number three we have discussed at length. With no real clarity there ever either.
I don't think she knows we are not connecting until I figuratively clobber her with it. The non-clobbering methods I know of do not seem to register with her that there is a problem or failure to communicate.