This person was posting on the forum for a while regarding Notre Dame but hasn't in a few months. She does give tours and was very good about NOT advertising on her forum posts which I thought was very professional. I have not met her so know nothing other than that she posted here. I do not know if she has the French qualifications to be an official guide.
https://community.ricksteves.com/users/941279
She also has an Instagram presence:
https://www.quasimodoandhiscathedraltours.com/?utm_source=ig&utm_medium=social&utm_content=link_in_bio
I don't know if Notre Dame is allowing people to guide inside or not. It was pretty crowded when I visited in October (as in shoulder to shoulder in the walk around the nave).
You could also contact Paris Walks at www.paris-walks.com to see if they can arrange a private walking tour to meet your needs. I've done a private walk with them to cover a subject they only do occasionally and it was well worthwhile.
IF you are able to work something out, I'd love for you to come back with a report on how it went!
You'll love the Best of Paris tour. It is awesome. I did it in 2014 and still use knowledge gained from that tour on my yearly visits.