I'm so excited.

I think my Light Sussex hen is broody! At least, I hope she's broody and not sick.
I've never had a broody before! Do they practise a bit before starting properly? I'm wondering because she spent about 5 hours in the nest box yesterday and then she just came out and acted normally for the rest of the day. Then at night, she went and slept in the nest box instead of on the roost but this morning she was up and about as normal again. At around midday today she went back into the nest. She's been in there ever since and she's sleeping in there again tonight.
I don't want to disturb her too much but I checked on her to make sure nothing was wrong. She was alert and was clucking at me when I tried to see how many eggs she has. She looks a bit puffy but not in a sick sort of way. She seems to be eating some of her own feathers. I've read that they can do that. Does that sound normal for a broody?
The other really exciting thing is that my Light Sussex cockerel, the one I mentioned before that was suddenly lame, has been making progress. Not only is he seeming to improve somewhat, but he's really proving himself to be the amazing cockerel I knew he would be! He's so devoted to his hen and he's been hanging around her at the nest. He's actually been able to get himself up the ramp to spend time sitting beside her.
A week ago he couldn't walk. He's still really limping but I'm amazed at this new ability to get himself around and even up the ramp. I've decided to remove the crate he's been sleeping in and let him sleep in the coop with the hens. I so hope he keeps getting better and will be ok.
So now I need help to figure out what to do! Should I leave her in the main coop or move her somewhere separate? I've read that both ways are possible but I'm not sure what's best. Should I give her some eggs to hatch? Or should I try to give her some of her own chicks when they hatch in the incubator next week?
Speaking of which, I also did my day 14 candling today and everything looks great with all 15 of the eggs.
