True Dat!
I had one that hatched a batch in March then I broke her 7 times over the summer.
Finally gave her away and she never went broody again.<shrugs>
If you don't want her to hatch out chicks, best to break her broodiness promptly.
My experience goes about like this: After her setting for 3 days and nights in the nest (or as soon as I know they are broody), I put her in a wire dog crate (24"L x 18"W x 21"H) with smaller wire on the bottom...