Check at your local Tractor Supply Co. They get in new baby chicks every week this time of year and again in the spring. Call ahead to all the TSCs within an hour drive of you and ask if they have pullets. you'll have a 90% chance of them all being littler girls. Nice quiet pretty little girls.
I've finally gave up on trying to break broodys. I have tried every trick in the book only to have them go back to being broody in a week or two. I've found the best thing is either give them some eggs to hatch off or wait a week and slip some babies under them. Imho, that's the best and easiest way to break a broody.