My broody hatched five chicks, but my one remaining viable egg was left alone. My hen began to rear the chicks after 24 hrs of waiting. I brought the egg inside and after warming her with my own body (the egg was cold), I heard her start to chirp inside. When I candled her, she was moving like crazy. All night I have kept her on my body or on a heating pad. She pipped at 730pm last night. I pulled off the cracked shell of what she was able to do last night. There has been no progression. It is now nearly 9am. I can see her moving, but I don't know what to do to help with humidity. I have her in a box with a heating pad and a wet towel. When should I intervene? The others hatched two days ago on day 20. I do not have an incubator because my broodies usually do this part. Should I wait it out?