Update: I went out to the coop this morning and while checking things out, I caught the faint sounds of peeping! They are due to hatch tomorrow, so things seem to have gone well.
However, the hen was still moving some eggs around after she gobbled some hand-fed scratch. Is that going to cause a problem for the chicks? In an incubator, you are supposed to let them sit for the last 2 days without turning, but how will that pan out in this scenario? I'm probably being paranoid since it is my first broody and attempt at hatching, but it seems to work against incubator advice.
The brooder is set up under the lofted roost box. I put some sand down and plugged in the heat lamp to dry/warm it. Another fear is that the chicks will not be able to get to the brooder before another hen picks on them, but I'll just have to be on guard duty tomorrow and hope for the best. I have the brooder enclosed in a fence that have 2" square holes so that the chicks can come out to "momma" but the other hens cannot get in. Is this a good idea, or should I just stick her in there with them, separate them completely, or some other option?