So I think there are a couple things that we'd need to frame out here for this to be useful, so please bear with me.
Jocasta has three beliefs (all BW characters have at least three). There's been a lot of digital ink spilled about how to frame them, but one way to do it is as follows:
(1) a Fate mine. Fate's a type of meta-currency in BW that allows you to modify rolls and is a necessary resource for doing certain things in advancement, and you can acquire it by playing your Beliefs. We don't need to get into more detail than that; it's sufficient to say you want Fate, and you want a means of getting it. "I will be famous for my deeds!" is a pretty good Belief for this. You can hit it all day long in play.
(2) one about a long term goal that's pointed at the current situation. This is not the best belief, but it'll work for our purposes: "Lanefania needs heroes, and I'll start by ridding it of Old Fezziwig and his bandits."
(3) usually about one of the other characters and their goals, but it could be a separate goal, too. Perhaps this one puts different pressure on Jocasta to not stick around. "It's far away, but I must go across the sea to Nafenalia for the Grand Tournament next year!"
Let's say, that in the course of handling Old Fezziwig and his bandits, Jocasta meets the tavern keeper Johann, and they've got a real good rapport. He's energetic, handsome, competent, etc. Maybe he picks up a shield and a table leg and helps out in the fighting, maybe he's the one who leads the other villagers out of the Caves of Doom, past the baby animal pens, and back into the village while Jocasta gives Old Fezziwig what for.
I think I've said this before, but BW doesn't do idle distractions, and the system's going to come into play. So maybe because of a comment you've made out of character or something that happens in play after Old Fezziwig's demise (he's popped up in other scenes involving other players' goals and built some relationships) that indicates you're open to this, or maybe just because Jocasta has the Romantic trait, I frame a scene before Jocasta heads to the coast to get passage to Nafenalia where Johann says, "hey...stay."