Hmmm Farnese would still lead the holy iron chain knights, but they wouldn’t have a 2 year pilgramage trailing Guts. They do guard duty too come to think of it… maybe Mozgus goes around to all the kingdoms under the Holy See to be creepy and threatening and ominously suggest they start their own witchhunts etc to prove their devotion to the church or w/e, and they’re his personal guards. Maybe there’s some tension brewing between kingdoms wrt religion and there’s threats of holy wars breaking out. Or, ooh, Ganeshka would still be a thing, maybe this is the holy see’s attempt to unite kingdoms against the Kushans, since Ganeshka is amassing a huge terrifying army and starting to move west. W/e.
So Farnese ends up in Midland for a while. Casca would hate her at first for being a stuck up rich noblewoman who leads an army of guards and can’t even swing a sword, and since this is Griffith’s kingdom now Casca would be his right hand woman while Farnese is Mozgus’, so they might have to interact and feign politeness at like, the hospitality balls and during tense meetings.
(also lmao @ the idea of Griffith dealing with this shit, he’d absolutely hate having to humour someone like mozgus)
Farnese might be kind of in awe of Casca, as someone who clawed her way to power instead of just being appointed due to birth status, plus she’d be attracted to her, and both those things would manifest in hate lol bc Farnese is a mess. Casca would also be kind of jealous of how Farnese had everything handed to her, and would also feel attraction which would piss her off.
Also imagine Farnese spending hours ranting to Serpico about how horrible Casca is, and vice-versa w/ Casca complaining to Judeau, and both Serpico and Judeau being like, hmmmm.
I’d want to manufacture a scenario where Casca has to save Farnese. Political assassination shit? Slooooow burn where this rivalry continues until they go to war together, somehow ending up within interaction-distance of each other lol? Something lighter maybe – a hunting expedition meant to encourage comraderie gone wrong? Anyway smthn happens and Farnese transfers her devotion from God to Casca, and starts listening when she explains how fucked up the inquisition is, and they start bonding and realizing they have things in common despite wildly different upbringings, like parents who didn’t gaf and latching onto causes to feel fulfilled and being sole women surrounded by men, etc.
Idt Farnese’s worldview necessarily has to be shattered before she loses her faith, like in canon, bc I think her faith is just a coping mechanism for loneliness.
Also I rly like the idea of Casca being the one to save someone, instead of needing saving, and that being the start of a romance.
Ok that’s all I can think of for now, this is probably a longer response than you were expecting lol but I just love that love/hate shit so much.


