Yeah, I don't actually think I have played a system where there's a general mechanic which literally dictates PC behavior. Some PbtA playbooks may do that in certain moves, perhaps, as part of the game's premise, maybe? I guess maybe it's more common in, say, Monsterhearts (I have not played it)? In AW for instance the Persuede move used against another PC just, at most, gives you XP for doing what the other character wants. And if you want what they want, then it's just fiction, there's no move at all.
Typically what happens in PbtA play is you roll 9-, or 6-, and the GM gets to make a move. Within the bounds of agenda, principles, and fiction a GM could certainly form a move like "your nerve fails you, thinking about the pain she will feel is too much for you" or something like that. BW's Steel checks do something similar as I understand it. Note that in both BW and any properly run PbtA these stakes should be on the table at the start. FitD is especially strong here.