I wonder if she didn't see Mank as a representative of the Algonquin Round Table, a group that Welles was fascinated by as well. They certainly had their share of influence on the snap, crackle, and pop of 30s Hollywood dialogue (transferred from Broadway) that she loved....she stumbled upon the idea that Herman Mankiewicz may have been responsible for a lot more of what she liked about certain 30s movies than had been previously understood
Interesting that this thread was started a few years before THE OTHER SIDE OF THE WIND became available for us to watch. Having seen the film quite a few times now, I agree with you that Juliette Riche doesn't seem that much like Pauline Kael. She's introduced as an esteemed critic, but she also claims that she is writing the "authorized biography" of Hannaford, which might make her a fusion of Kael and Charles Higham (Higham was originally supposed to be parodied in the film as "Higgam", but that character was eliminated when Bogdanovich switched to the the role of Otterlake).
Yep, that's why he slaps her at the end. She finally pressed the button that he couldn't tolerate.the character of Julia Rich is for all her probing pushiness allowed to be essentially correct in her assessment of Hannaford.
BTW: Has anyone seen the "view" numbers for the thread on Fincher's MANK in the Kane/Ambersons forum? At nearly 4 million views it completely towers over everything else on the board,