Leave her alone, let them all figure it out. You may not get 100% hatch, but seldom do you even in an incubator. It is much better not to interfere.
I did lock out the layers away from her for about 12 hours. I just put out a temporary nesting box in the run, and left mama and babies in the coop.
Let the layers out the next morning to free range, put a cardboard box on the side, put some hay in it, and slid it into a cornor of the coop. Mama left her nest, took the babies out into the sun of the run, and went back early to the coop into the new nest that night. I let the layers back in. And then they were on their own.
NO reintroduction issues, worked fantastic for me. currently praying for a broody hen right NOW!
<rsK