That's my parters special interest too!
They mentioned a few times that they weren't the type of autistic that had a special interest and/or was good at any one thing. And I was like, you really dont know do you? I've heard them giggle about people 'bragging' they had read 65-100 novels that year. Which to the average person I agree is a ton, but I am sure 600 isn't even an exaggeration about your wife because I wouldn't put it past my partner for doing so!