I guess I should have specified 'as young chicks'.
Most put their broodies and chicks in with the flock after about a week after hatch if they brooded separate from flock...or right from hatch if they brooded within the flock.
I think you got lucky.
Sorry, but yes my broody was separated the entire time until the chicks turned a month and a half. Each time I tried to integrate her sooner she would pick fights with the other hens and the chicks would scatter in fear. I find it easier to reintroduce a broody this way and my flock accepts her back pretty quickly.