And, just to add another opinion to the mix, I will say that in my view the idea should be that everyone at that point knows that the FO is there and that they’ve found them, but they’re unsure of what exactly they’re going to do.

Maz decides someone has to take the lightsaber to bring it to Rey, so they go to the basement (and Finn, as someone who knows the FO, wouldn’t be against potentially hiding in there). But the FO sends TIEs to wreck the castle, which Maz wasn’t expecting them to have the audacity to do (hence why they went down there). She is angry and slightly shocked at the FO’s shameless act, cursing them to herself: “Those beasts!”