Do you think she is just being wiley and wants to hear it explained from your perspective?

I would suspect the therapist of messing with me rather than really not knowing.

I'm sure I'm totally projecting from current T but sometimes I get the feeling that Ts live in constant fear that if they stretch their kidneys even a teeny tiny bit more than they're used to in order to understand what clients are saying, their grey matter will rocket straight out of their skulls or something.

I would not believe a therapist who said they didn't know the meaning of gaslighting or cyberstalking. Thinking of them as lying in that case is much better than finding out they are a complete bonehead.