She writes:

If they said they didn't understand, or even that they didn't believe me, that would be workable.

Which I read to mean that she is not opposed to them expressing confusion or saying something like "Huh, you always seemed more like a pure thinker to me." (as opposed to "No way. You're totally a thinker.") It seems precisely how the statement is phrased and how the discussion is conducted that is at issue here.