'Hertha' is my mental shorthand (and the filename of the document -- because I generally come up with the title last, my computer files, which have to be called *something*, tend to get named after a significant character, so I have documents named Eleonore, Philippe, Anne, Perrette, etc!)

The title of the Hertha-story is "High City on a Hill": https://archiveofourown.org/works/37242388/chapters/92919667

I noticed your review on "Appraisal" and did wonder if it had been prompted by this post -- thank you!