Thanks! That was exactly it! 
Wow, 4200+ posts for a demo of one chapter must be some kind of record…! It does sound like a great story, I hope the writer hasn’t entirely given up on it.
Does anyone know of other IFs with arranged marriage in them? (either finished or WIPs)
I can only think of Guenevere and Bethroned (and the last one doesn’t have the spouse as a RO.)