Free ranging won't break her because she will reset her body clock when she goes to roost @ night. My BR was chronic last summer. I couldn't get a crate so we went round & round. Keeping her cool by getting her body temp down & her mind off nesting is what is needed. It was nights I blew it. She'd warm up & head straight for a nesting box each morning. It was pathetic. She'd cry & press up against the wire nearest a nesting box & brood there until I could get her interested in foraging with the girls. Not doing that again.Hopefully I won’t need a matching T-shirt!Do you know if free-ranging delays the breaking? Does there have to be an element of boredom as well as cooling? Or is it just the nesting that keeps the broodiness going?
I am planning to create a thread about my girls once this year has finished, but I can give you the Readers Digest version. 
I’ve had chooks for two years now, my first four were Isa Browns from a local battery farm (which has since been shut down for animal cruelty). We got Emily and Lucy in October 2017, they had a dirt bath within 10 minutes of being let out of the box! They were skittish but we kept picking them up and they got more used to it. I didn’t let them free-range as the run is quite big.
I don’t know what killed her but Lucy lost her voice at the same time so it might have been a virus that causes paralysis of the vocal chords and neck muscles (not sure if that’s Mareks or something else). It was a long weekend so had to wait until Tuesday to go back to the battery place. Lucy seemed sad so we let her out to free-range whilst we were out there, and she seemed to perk right up. I didn’t know anything about quarantine or pecking order, so I just got two more Isas; Chickie and Henny Penny. When I let them out of the box, Lucy hung back for about five minutes, then started to scratch around with them. I have a really funny picture of them trying to have a dirt-bath in the same space-time continuum, with Lucy photo-bombing! Luckily they weren’t sick, and there was absolutely no pecking order at all, they just mucked about together.
So we are back to three; one from each pair with Lucy being about three and a half. I’d be happy if she retired from egg-laying and lived for another five years!
though I do find all this broody breaking very informative and interesting. I also feel sorry for the broody girls, but a little discomfort and crating is better than weeks on end of them vainly trying to hatch eggs and potentially depriving themselves of feed and wasting away. Though it seems cruel, it’s really better for the poor dears.
Nit great when it's raining though 
