Mum and chick advice please

My first little gang of thugs chicks are now just a day short of five weeks old and are coming on a treat; it looks like I have four cocks and a hen (possibly three and two). Mum has done a grand job and is in fine fettle and all seems to be going very nicely.

My question.

I was checking on them all last night and found that Mum had laid her first egg since she first became broody. My books are a little vague after the incubation/new chick phase, but it seems that once she feels that they can look after themselves, she'll go back to laying - does this mean I should get her back into the general population?

My gut feeling is that I should leave her with the chicks until they are on growers pellets and with a few more weeks under their belts.

As ever, this ambitious and enthusiastic novice welcomes your advice. 

Thanks,
Andrew

Thanks Casey, perhaps I should reintroduce her back to the flock then.