I've got a cochin hen that has decided she would like to hatch some barn trash and gets quite distraught when I pick her up and put her in the coop at night. I've left her sitting on her "eggs" for the night and just going to leave her alone for now. How long does she need to sit before I can slip some chicks under her to raise? I have some hopefully coming in 1-2 weeks and might as well see if she'll raise them. That would only be 10-17 days of sitting.