Short answer: no.
Long answer: It totally depends on her temperament. I will not say never, as I have integrated silkie hens in with babies before but after a brief time where the brooder was separated but they could see each other, and the chicks were older (about three weeks old). I couldn't recommend this though as silkie hens can quite easily kill chicks, and I was just fortunate. I was also desperate, as I needed to get the chicks out of the other coop. So I had to combine housing and then found one of the silkie hens had made her way over to the baby side somehow and had turned mama to them. She adopted them!!!
So that adoptive mom looked after the chicks and I think that is why the other hens left them alone. So it was a special situation.
I would NOT put brand new chicks in with a hen, even a meek hen. I did that once before and lost two chicks. They were squashed. I thought they would be OK in with her since she was not feeling well and injured. She had been beat up by the others.
So the optimal time to integrate chicks in with older hens is about 16 weeks- just keep that in mind.
If you do it beforehand, it is a toss-up, depending on the personality of the older hens. Baby chicks really don't stand up for themselves and are at the mercy of the hen. So my answer would be no.