x2. Breaking them immediately usually goes faster, reduces tension in the flock (especially if the broody is the super angry type), and gets the hen back to "normal" sooner.
I'd do another 24 hours and reassess (and potentially need to do it again the following day). She's probably close to tipping over to the side of "fine, I'll break" but not quite there yet.
I have a hen that loves to sloooowly slide into being broody (it takes weeks for her to commit, she's...
As long as she stays out of the nests that's the main thing. Sometimes even when they're broken enough to not go sit in the nests they'll still make a few broody sounds, or puff up on occasion, and you don't need to cage them for that.
If the breaker cage location is safe for overnight stay, you're better off leaving her in there for at least 48 hours straight, and then depending on behavior, extending it out 24 hrs at a time as you go.