Maybe when the idea was suggested, she heard the 'celebrity' bit, but zoned out when the word 'mastermind' was also used in the same sentence.
I forget who it was who did Fawlty Towers, but I got the same score as she did, as fast as she did, I was dead impressed.
I haven;t studied FT - just watched it regularly since 1976 - one of my friends had one of the first video recorders in our county, and taped them all on broadcast, and we watched avidly night after night.
Then I found that my youngest daughter loves them as mush as i do - cue another ten years of viewing sessions!
No wonder I didn't need to study them for MM!!